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(ASB) What if the US of America teleported to its Antipodal position in 1866?

raharris1973

Well-known member
On the night of March 27th, 1866, shortly after President Johnson’s veto of the Civil Rights Act, the United States and its surrounding waters (with the exception of the Great Lakes), out to a distance of 30 miles, a depth more than a mile or two into the crust of the earth, and to a height ceiling of 5 kilometers*, extending through a bit more than half the altitude of the tropospheric atmosphere, before it reaches the the stratosphere.

However, the footprint of the missing land, water and oil does not become a vacuum, subject to immediate filling by matter and energy from the outside, because it is surrounded by a stasis field, suspending the operation of the the dimension of time within this area. No time, no motion of matter nor energy. (https://en.wikipedia.org/wiki/Stasis_(fiction))

The first beings to notice are Mexican bats and other nocturnal flying creatures colliding with the stasis field, terrestrial nocturnal animals, the occasional nighttime human traveler, and fish at sea, Westerly and northerly winds reaching near the American west coast and US northern border are deflected upwards and sideways by the stasis field.

After dawn, the human and animal residents of New Brunswick, then of Lower Canada Quebec, when looking in the direction of the American border see only a reflection of their own woods, houses and villages along the reflective surface of the stasis field. The people, dogs, and livestock that intentionally, or accidentally go right up to the reflective surface find it completely rigid, inflexible, unbreakable.

As March 28th goes on, sailors, fishermen and merchants bound for American ports find a reflection of the sea and themselves some 30 miles from any approach to the American coast, so does anyone sailing the Great Lakes,- unfortunately, many of those without the skills, and luck, to maneuver to evade the endless stasis field shipwreck and perish. As sunrise goes west, the strange phenomenon of the missing United States and the vast mirror-like replacement becomes visible to the people of western Upper Canada, Rupert’s Land, British Oregon Country/Columbia, and the residents of the currently war-torn northern Mexican states, and mariners off the former US west coast.



As news of the literal disappearance of the United States spreads up and down the Americas, and across the oceans, fear and panic spread around the globe.

Prayer houses are packed, millenarian expectations and speculations are made, omens are interpreted. Most common are calls for repentance for an assortment of sins and prayers for safety and salvation.

Yet at the same time, for most people, in most of the world, daily life must go on. People must work daily to eat daily. Even while worried the end times are near, even the higher and mightier types need to keep doing their jobs, more or less as normal, on the uncertain chance that tomorrow, and the days and weeks after that, *will* come as normal. This applies even to politicians and statesmen.

So the world in the days, weeks and months after the disappearance of America needs to deal with the real, physical, consequences of its disappearance. For the moment, broad ocean currents are similar, because the outline of the North American continent is maintained. Air currents between sea level and 5 km above sea level are blocked however, even while atmospheric currents above it flow freely. But deflection/diversion from lower levels will have some knock-on effects. Additionally, solar radiation hitting the top of the USA stasis field reflects off of it, with nearly all of it going back to space, increasing the earth’s albedo and reducing earth’s heat accumulation by a certain percentage in comparison to former daylight hours over the USA.

With over 95% of their headwaters gone, the stretches of the Colorado and Yaqui rivers dry up within an hour or so. With over 50% of its drainage basin gone, and half of its width (to the thalweg line) cut off by the stasis field, the Mexican side of the Rio Grande/Rio Bravo gets 65-75% lower. The Great Lakes, and consequently, St. Lawrence river, lose any water coming from their drainage basins in the US. This should decrease the water level of both, although the Lakes draw about as much water from Canada.

Canadian and international fishermen have the waters off New England to themselves for now, though many American deep sea fishermen and whalers, who were out to sea for multiple night deep sea fishing at the time of the event, find now they are refugees you have to lodge in the Canadian maritimes.

Some American deep sea fishermen of the south need to do the same thing in Bermuda, the Bahamas, and Cuba.

The Gulf of Mexico’s waters are no longer getting replenished and enriched from the Mississippi River system.

In Mexico, the Juarista forces who had been gaining support and momentum in their zone of control in the north, along the US border, have now lost the benefits of the border as a source of arms supplies, fresh mercenary troops, and cross-border sanctuary, in their struggle against the French-backed Imperial Mexican forces of Maximillian. At this point, the Imperial regime has superficial control over the great majority of Mexican territory, while much of the public and many generals are of uncertain loyalty, while the Juaristas have some political supporters in many parts of the country, they can only maintain a territorially controlling fighting force in Baja California, northern Sonora, northern Chihuahua, north Coahuila, and far southern Mexico around Chiapas, Campeche, and Yucatan.

The absence of the United States immediately removes American stored grains, cotton, beef, hides, iron, and all other sorts of exports from global trade and takes a relatively affluent market of 35 million people away from the exporters of Britain, Europe, the Orient, and the tropics. This should lead to a spike in the price of grain futures.

The United States is gone as a destination for aspiring emigrants, affecting people in Ireland, Germany, and Great Britain the most.

In the spirit of daily life, high and low, going on, Bismarck’s power-political scheming against Austria continues, likely still leading to Prussian war against Austria and its allies in June-July 1866, Prussian victory, dissolution of the German Confederation, and establishment of the North German Confederation, to be followed over the next year by the Austro-Hungarian Compromise or Ausgleich. The Qing Dynasty and its loyalist supporters will also still be completing their defeat of the Taiping rebels this year.

In Mexico, the French will continue to support the Imperial Mexican forces of Emperor Maximilian against the Republican forces of Juarez. With the sudden disappearance of the United States, there are no threats of intervention, although the fear of supernatural disaster sits right next door, and from the summer onward, Napoleon III’s attention ins increasingly brought back to Europe by Prussia’s remarkable victory.

Canada is spared cross-border raids by Fenian Brotherhood guerrillas based in the United States.

But...

From August 28, 1866 to September 27, 1866, unobserved by humans, further strange things happen undersea. At the bottom of the USA stasis bubble, at a steady rate, as is if 3D-printing, the “floor” of the bubble recedes, replaced with an exact copy of the Indian Ocean floor and then deep sea layers on the opposite, ‘antipodal’ side of the world. Over the course of thirty days, from the bottom of the sea, to the top, the sea is restored, with layers of Indian Ocean water joining the Pacific and Atlantic and now able to flow freely into each other, with less and less getting blocked by stasis, allowing first deep sea currents, and shallow sea currents to begin operating.

In the meantime, as if 3D printing, the subterranean layers of the continental United States from March 27th, 1866 are being reconstructed from the ocean floor upward, beneath the Indian Ocean, antipodal to their old location in the northern and Western Hemisphere. This new rising earth is kept ‘dry’ and separate from Indian Ocean waters by a thin layer of stasis no more than one micron thick.

On the night of September 27th, 1866, the whole process speeds up and completes itself, with the entire surface world of the continental United States, and all of its inhabitants, as they were at the moment of their disappearance six months before, being reconstructed in an instant, in an antipodal position to their old location, in the middle of the Indian Ocean in the eastern hemisphere, with all surfaces being the correct height from sea level.



In that same instant, the remaining stasis bubble over the old United States shrinks to infinitesimal size and then disappears entirely, allowing winds to blow, waves to form on the ocean surface, and the vast new waters where the United States used to be to be navigated.

The Americans encounter the same experiences others around the world had months earlier, finding sudden cliffs into the sea along their international borders, the volumes of certain rivers, like the Columbia, sinking, as they are disconnected from some of their drainage bases, and so on. They further find the stars are out of place and magnetic compasses are backwards from the expected in terms of north-south. However, the weather, and regional weather differences, seem seasonally appropriate. The shadows seem to fall on the landscape strangely all through March 28th.

Within a few days, an American vessel off the west coast likely makes contact with a British or French one rounding the Cape into the Indian Ocean, or an American ship from the east coast encounters a ship traveling to or from Perth, Australia, and the occupants of one ship are astounded to find that America is back, the other ship are astounded America was ever gone and that the world thinks its September, all are astounded America is in the Indian Ocean.

America, and all its productive capacity, are back in the world. Thanks to the six month delay “synchronizing” the USA to the seasons of its new hemisphere, it is spared any catastrophic disruption of growing seasons and famine.

Nevertheless, this drastic, supernatural event sparks its own wave of millenarianism in America, and a second-wave in the rest of the world, this one slightly less pessimistic but still “God-fearing” and respectful of powers beyond human understanding and control.

Among the projects of the Bureau of Freedmen and Abandoned Lands in the new American “north”, formerly its south, are several to shift landscaping to accommodate changes to the changed angle of sunlight because of the north-south switch.

As mentioned earlier, despite the disruption, people still need to earn their bread and act like the next day will come, and that makes life go on.

In the United States, a country literally turned upside down, it still means that President Johnson and the Radical Republican Congress likely still polarize against each other.

In Mexico, the French can keep up a level of commitment, and importantly, naval support, to prop up Maxmillian, and outflank the Juarez Republican forces and suppress them for the foreseeable future.

In Santo Domingo, the Spanish have worn out their welcome and face revolt. The Spanish may decide to leave, but if they do, US pressure has no part in it, because the US is not there to apply it.

Canada is under less pressure to federate without the American menace, but it faces a near term geologic menace. With the opening up of the sea of the United States, the Great Lakes, if their beds are above sea level, may drain into the sea leaving vast mud flats blocking the ports of Ontario. The draining of the Great Lakes also would halt the flow of the St. Lawrence, land locking Montreal and Quebec. Substantial works would be needed to reconnect Canada’s cities, industries and rails to the ocean, or to render land reclaimed from the sea productive.

The Russian Empire can safely assume also that the United States down in the Indian Ocean, will not be interested in purchasing Alaska.

The new geography will affect trade patterns and economics: For the remainder of the 1860s, the US location in Indian Ocean, a longer journey than the Atlantic one from Britain, France, Belgium, and the German states, provides additional protection for American industry on top of the tariff, because of additional shipping costs keeping American manufactures more price competitive. However, distance from Europe works against the competitiveness of American cotton compared to Egyptian and Mexican.

American firms start selling and making reputations in Perth, Western Australia, then Southern Australia, Victoria, New South Wales, and eventually the Cape Colony, Natal, and New Zealand, and the Dutch East Indies, India and Swahili coast.

The replacement of the old USA with a vast water passageway makes a direct Britain and Western Europe to Japan and China trade route commercially viable. It also certainly voids any interest in any Central American isthmian canals.

However, given British and French sunk costs around the Indian Ocean littorals, and in the Suez Canal project itself, and newfound American industrial competition in that area, completing the Suez Canal work is just as urgent as ever. It should be completed no later than OTL’s scheduled time of 1869.



From the beginning, with it handling a share of American trade and migration, Suez Canal receipts should be higher every year of its early decades, and while it may be stressed by bottlenecks and need maintenance, receipts should fund it. There is a chance this all could keep the Khedive of Egypt solvent, which would be a geopolitical change.

In addition to strengthening the importance of the Suez Canal, the presence of the USA in the Indian Ocean should increase the importance of the Cape Colony as a stop over in USA-European trade.

I’m going to be optimistic that the British Empire will invest at adequate scale and speed to keep Canada connected to the seas and a usable economic asset. Once it is clear this is happening, Canada should actually be a great beneficiary of the removal of the United States from its neighborhood. Canada, as one of the cheapest overseas destinations from Europe, should attract a good share of the late 1860s and 1870s immigration that in OTL was bound for the United States from northwest Europe, increasing Canada’s workforce, and speeding the settlement and development of the Canadian prairie.

Presuming the Mexican Empire can be put on a firm footing before 1870, and be put into an early version of the stability we saw with the Porfiriato of OTL, and that this can survive France’s defeat at the hands of Prussia in 1870-71, Mexico may also attract many immigrants, especially Catholic ones, who in OTL otherwise would have gone to the United States.

With a working Suez Canal and increased steamship traffic volume as the 19th century wears on, I would expect immigration to the US to resume and grow. To some extent, the existence of anchor communities like Irish in the east and Chinese in the west and Germans in the middle may distribute immigrants somewhat along OTL lines. But the new geography and shipping lanes will encourage different patterns. In general, America’s gateway for “new” European immigration should be its west coast, San Francisco and Portland, not the east. Chinese and Japanese immigrants should be no more concentrated in the west than the Gulf Coast and east. New Orleans and Galveston would be be big immigration ports.

Meanwhile, immigration from India should become substantial generations sooner, along with Indians studying in America. And Americans looking for wide open frontiers will have their choice of frontiers. They will have their own west, but there may be enough choosing to move to Western Australia to affect the local culture.

Well to do and artistic American should remain interested in Europe for cultural reasons, and should be at least as equally interested in the Far East for trade and missionary reasons, but the new geography should enhance ATL Americans interest in southern and Eastern Africa, the Middle East, India, Southeast Asia, and Australia, a great deal, while making Latin America a lost, fading memory.


Other variants of the same idea -


Version 2. What if the USA (Lower 48) disappeared in September 27th 1914, and reappeared in March 27th, 1915 - in the Indian Ocean.

The physical aspects of the scenario are identical to the 1866 scenario, except that at the very beginning of the scenario, the Great Lakes are exchanged with saltwater patches of the deep Indian Ocean, and the St. Lawrence riverbed is replaced with a deep saltwater channel from the Indian Ocean. While fouling the Lakes and River as a source of potable water for drinking or irrigation, it keeps them available for navigation constantly through the period of the stasis bubble and then after its disappearance.

How do global economics and geopolitics proceed from there?



Version 3. What if the Lower 48 USA disappeared in November 5 1938, reappeared ion May 5, 1939, in the Indian Ocean

The physical aspects of the scenario are identical to the 1866 scenario, except that at the very beginning of the scenario, the Great Lakes are exchanged with saltwater patches of the deep Indian Ocean, and the St. Lawrence riverbed is replaced with a deep saltwater channel from the Indian Ocean. While fouling the Lakes and River as a source of potable water for drinking or irrigation, it keeps them available for navigation constantly through the period of the stasis bubble and then after its disappearance.

How do global economics and geopolitics proceed from there?



Version 4. What if the Lower 48 USA disappeared in November 5 1945, reappeared ion May 5, 1946, in the Indian Ocean

The physical aspects of the scenario are identical to the 1866 scenario, except that at the very beginning of the scenario, the Great Lakes are exchanged with saltwater patches of the deep Indian Ocean, and the St. Lawrence riverbed is replaced with a deep saltwater channel from the Indian Ocean. While fouling the Lakes and River as a source of potable water for drinking or irrigation, it keeps them available for navigation constantly through the period of the stasis bubble and then after its disappearance.

How do global economics and geopolitics proceed from there?
 

Buba

A total creep
Top of mind:
- outlet of Lake Superior makes a nice waterfall, 182 metres in height. Other Great Lakes are gone;
- Quebec is tidal, so still a seaport;
- Montreal is 6m asl, hence probably still a seaport as well;
- Chicago booms as it becomes a seaport - the 174m cliff is a bit of a bother, though;
- Canadian Prairie warmer and wetter? USA prairie colder?

Noticed this after posting PM ...
 
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ATP

Well-known member
1.Normal Mexico without USA meddling
2.1914 - hope for the same,less troops send to France
3.1938 - No war with Japan,FDR provoked it in OTL.No war with Germany,too,Hitler do not declare it.Hitler win even being idiot,german Europe in 1945.
4.Soviets use those 6 months to attack and take Europe.When USA come back,they destroy them.Happy End - after discovering massgraves full of soviet victims in Western Europe,nobody there would support it.
 

Buba

A total creep
I suspect that WWI will look somewhat differently ... a Soviet Union is quite unlikely.

As to small consequences - Cuba and PR remain Spanish.
Phillippines?
With no US next door - does Canada revert to the Pound? Or does the Canadian Dollar have its value adjusted from 197 to 200 farthings?
 
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WolfBear

Well-known member
Meanwhile, immigration from India should become substantial generations sooner, along with Indians studying in America. And Americans looking for wide open frontiers will have their choice of frontiers. They will have their own west, but there may be enough choosing to move to Western Australia to affect the local culture.

So, could we get a "Chinese and Indian Exclusion Act" in the US in 1882 instead of only a Chinese Exclusion Act in this TL?
 

Buba

A total creep
Oh, it just came to me - Montreal is finished as a port because there is no river to ship goods to it. And the quantity of goods to ship is miniscule compared to OTL as the US Midwest is gone.
The new big ports in central-west Canada would be those at the new mouths rivers draining the York Peninsula, and in the west - where Red River used to be. The latter to export prairie grain.
 

raharris1973

Well-known member
So, could we get a "Chinese and Indian Exclusion Act" in the US in 1882 instead of only a Chinese Exclusion Act in this TL?

Maybe. Depends how many Indians start making the trip between 1866 to 1882 and if exotic novelty starts to be seen as dangerous competition. There were small-scale migrations of Indians to other parts of the British Empire, and Britain, at this part of the 19th century, Afghan camel drovers to Australia, etc, but I don't know what the scale was, if it was at all comparable to the numbers of Chinese moving to the western US.
 

raharris1973

Well-known member
1.Normal Mexico without USA meddling
What is a "normal Mexico" - do you mean the Mexicans would get rid of the French backed Emperor on their own, without US meddling? I assume you are talking about the 1866 version of the scenario.

2.1914 - hope for the same,less troops send to France
The "hope for the same" part. You referring to avoiding the Mexican-American hijinks of 1914-1916? US gets involved in WWI somehow but sends less troops to France. Would US be troubled by German submarines in Indian Ocean or south Atlantic? Would US troops perhaps get into WWI fighting on alternate fronts, via Africa, Ottoman front, Salonica, Italy?

3.1938 - No war with Japan,FDR provoked it in OTL.

If FDR provoked it in OTL, why wouldn't be motivated to provoke it in the ATL. Positioned in the Indian Ocean you would think he would be just as concerned with the security of China and Southeast Asia and Britain's position there and in Australia from Japanese attack as in OTL.

No war with Germany,too,Hitler do not declare it.

Why not, do we not expect FDR's USA to do Lend Lease to help Britain around the globe?

4.Soviets use those 6 months to attack and take Europe.

Do the Soviets do anything in the Middle East or Far East in those 6 months? or when the US comes back and is assembling its bombers and building up its atomic bomb stockpile in Britain, Japan, and possibly North Africa and Southern Asia to counter-strike the USSR?

I suspect that WWI will look somewhat differently ... a Soviet Union is quite unlikely.

In the 1914 version of this scenario? Why so in particular? Are you thinking the US is more likely to stay out and this causing the Russians and possibly whole Entente to quit before the Bolshevik revolution happens? Or the US being in the eastern hemisphere is more inclined to intervene on the side of the White Russians from the south through Persia?

As to small consequences - Cuba and PR remain Spanish.
Phillippines?

This could only apply in the 1866 version of the scenario, the only one predating the Spanish-American War. The others come after. Even for the versions that come after, I didn't teleport anything besides the Lower 48 states. The Caribbean territories don't land badly, but Alaska would land as an awkward overlapping extension of Antarctica, and Hawaii would land in the middle of Botswana and Namibia. The Philippines would land deep in Brazil. So I leave them all in place.

With no US next door - does Canada revert to the Pound? Or does the Canadian Dollar have its value adjusted from 197 to 200 farthings?

It all depends when, and whatever it was using. Was Canada using a dollar or a pound in 1866? What about 1914? I assume they had a dollar by '38 and '45.
 

WolfBear

Well-known member
Maybe. Depends how many Indians start making the trip between 1866 to 1882 and if exotic novelty starts to be seen as dangerous competition. There were small-scale migrations of Indians to other parts of the British Empire, and Britain, at this part of the 19th century, Afghan camel drovers to Australia, etc, but I don't know what the scale was, if it was at all comparable to the numbers of Chinese moving to the western US.

One thing worth noting is that it would be just as easy for Eurasian immigrants to sail to the US West coast as to the US East coast. This could mean more immigrants settling in the Western US. Though the difference might not be too great since the Transcontinental Railroad was going to get completed in 1869 anyway, which is just three years away.
 

Buba

A total creep
Yes, I got stuck on the 1866 scenario.
Canada (i.e. Ontario&Quebec) had adopted the CanDollar a few years earlier. At par to USD, hence worth 197 farthings or at 4,86 to Pound Sterling exchange rate.
IMO an USA moved to the Indian Ocean in 1866 would be less affluent that OTL (higher price of exports, less attractive for British DFI, less immigration), thus of lesser import in WWI. IMO without the USA WWI would had ended in 1917 with a negotiated peace - in which case no SU. Which was a fluke anyway.

As to why do I suspect different fates of respective prairies.
Both lose the benefit of continental climate - a warm summer - and are more maritime influenced. The difference I preceive between the two is the Canadian ex-interior having the sea on the "warm side", while the USA's on the "cold side". While south Canada might be - I'm not learned enough to say either way - bathed by a balmy warm current, south USA is IMO certain to be washed by the frikking cold ACC.
While the Old Pacific Northwest will be buffeted by crazy winds of the roaring forties (look up climate of Chilean Archipelago), Montana and the Dakotas could end up as Patagonia - a cold desert-steppe. With no Gulf Stream and Great Lakes to warm it, the US Northeast/New England could be colder as well.
California, Arizona, Nevada, Utah, NM and western Texas could be much wetter, though, supporting larger populations.
The sort of climate Seattle may expect to have:

This is what Montana in the rain shadow could end up with
 
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ATP

Well-known member
What is a "normal Mexico" - do you mean the Mexicans would get rid of the French backed Emperor on their own, without US meddling? I assume you are talking about the 1866 version of the scenario.


The "hope for the same" part. You referring to avoiding the Mexican-American hijinks of 1914-1916? US gets involved in WWI somehow but sends less troops to France. Would US be troubled by German submarines in Indian Ocean or south Atlantic? Would US troops perhaps get into WWI fighting on alternate fronts, via Africa, Ottoman front, Salonica, Italy?



If FDR provoked it in OTL, why wouldn't be motivated to provoke it in the ATL. Positioned in the Indian Ocean you would think he would be just as concerned with the security of China and Southeast Asia and Britain's position there and in Australia from Japanese attack as in OTL.



Why not, do we not expect FDR's USA to do Lend Lease to help Britain around the globe?



Do the Soviets do anything in the Middle East or Far East in those 6 months? or when the US comes back and is assembling its bombers and building up its atomic bomb stockpile in Britain, Japan, and possibly North Africa and Southern Asia to counter-strike the USSR?



In the 1914 version of this scenario? Why so in particular? Are you thinking the US is more likely to stay out and this causing the Russians and possibly whole Entente to quit before the Bolshevik revolution happens? Or the US being in the eastern hemisphere is more inclined to intervene on the side of the White Russians from the south through Persia?



This could only apply in the 1866 version of the scenario, the only one predating the Spanish-American War. The others come after. Even for the versions that come after, I didn't teleport anything besides the Lower 48 states. The Caribbean territories don't land badly, but Alaska would land as an awkward overlapping extension of Antarctica, and Hawaii would land in the middle of Botswana and Namibia. The Philippines would land deep in Brazil. So I leave them all in place.



It all depends when, and whatever it was using. Was Canada using a dollar or a pound in 1866? What about 1914? I assume they had a dollar by '38 and '45.
1.Normal Mexico - not ruled by masons.USA always supported them.
2.The same for Mexico,USA could send troops to beat Turkey - which woud led Allies send supplies to Russia,which would led to Allies victory.No independent Poland,but not soviet,too - still better world.
3.You are right,USA would provoke war here,too.By the way,what about Hawaii islands? there would be still USA naval base there,but ,becouse fleet would be in Indian Ocean,Japan would not attack them.Only Philippines,i think.
4.Probable,besides FDR ordered attacking u-boots.So,there would be - probably - war anyway.
5.Of course,soviets would take Iran,Turkey,Iraq and Palestine,too.Maybe more.We could see soviet Africa - for brief time,of course,becouse USA eventually kick them off.
India - not possible,there was no land routes for invasion,and soviet navy always sucked.
But - tey could try take Japan - becouse soviet navy sucked,and Japan have still its only partially demobilized army and ammo,not mention MacArthur,it would not succed.
 

Buba

A total creep
Finally wrapped my mind around the other three dates :)
Top of Mind:
In all three cases it complicates logistics. Shipping from the NBL (New, Better Location!) USA now takes several months, not weeks. Remember - the merchies of the day trudged at 8 knots. This will put enormous strain on shipping - I'd venture that in the time a ship makes a round trip between NBL USA and Europe it previously made THREE. Least impact in '46, I think, as AFAIK there was a post war glut of ships.
I think that Japan and China would now have better maritime access to Europe, which should aid their economies, manufacturing included. With higher shipping costs American raw materials and farm produce (most of what it exported in 1914, and still important later) loses in competiveness. Latin America, Canada, India and most of Africa also are now closer in shipping terms to Europe.
The NBL is positioned in a way that the Suez and Cape routes do not differ much. The Med gains in importance, but not in some spectacular manner.


I'll try to come with something interesting and insightful to say on specifc scenarios later :)

The last one 45->46 - seems to change things the least.
 

stevep

Well-known member
On the night of March 27th, 1866, shortly after President Johnson’s veto of the Civil Rights Act, the United States and its surrounding waters (with the exception of the Great Lakes), out to a distance of 30 miles, a depth more than a mile or two into the crust of the earth, and to a height ceiling of 5 kilometers*, extending through a bit more than half the altitude of the tropospheric atmosphere, before it reaches the the stratosphere.

However, the footprint of the missing land, water and oil does not become a vacuum, subject to immediate filling by matter and energy from the outside, because it is surrounded by a stasis field, suspending the operation of the the dimension of time within this area. No time, no motion of matter nor energy. (https://en.wikipedia.org/wiki/Stasis_(fiction))

The first beings to notice are Mexican bats and other nocturnal flying creatures colliding with the stasis field, terrestrial nocturnal animals, the occasional nighttime human traveler, and fish at sea, Westerly and northerly winds reaching near the American west coast and US northern border are deflected upwards and sideways by the stasis field.

After dawn, the human and animal residents of New Brunswick, then of Lower Canada Quebec, when looking in the direction of the American border see only a reflection of their own woods, houses and villages along the reflective surface of the stasis field. The people, dogs, and livestock that intentionally, or accidentally go right up to the reflective surface find it completely rigid, inflexible, unbreakable.

As March 28th goes on, sailors, fishermen and merchants bound for American ports find a reflection of the sea and themselves some 30 miles from any approach to the American coast, so does anyone sailing the Great Lakes,- unfortunately, many of those without the skills, and luck, to maneuver to evade the endless stasis field shipwreck and perish. As sunrise goes west, the strange phenomenon of the missing United States and the vast mirror-like replacement becomes visible to the people of western Upper Canada, Rupert’s Land, British Oregon Country/Columbia, and the residents of the currently war-torn northern Mexican states, and mariners off the former US west coast.



As news of the literal disappearance of the United States spreads up and down the Americas, and across the oceans, fear and panic spread around the globe.

Prayer houses are packed, millenarian expectations and speculations are made, omens are interpreted. Most common are calls for repentance for an assortment of sins and prayers for safety and salvation.

Yet at the same time, for most people, in most of the world, daily life must go on. People must work daily to eat daily. Even while worried the end times are near, even the higher and mightier types need to keep doing their jobs, more or less as normal, on the uncertain chance that tomorrow, and the days and weeks after that, *will* come as normal. This applies even to politicians and statesmen.

So the world in the days, weeks and months after the disappearance of America needs to deal with the real, physical, consequences of its disappearance. For the moment, broad ocean currents are similar, because the outline of the North American continent is maintained. Air currents between sea level and 5 km above sea level are blocked however, even while atmospheric currents above it flow freely. But deflection/diversion from lower levels will have some knock-on effects. Additionally, solar radiation hitting the top of the USA stasis field reflects off of it, with nearly all of it going back to space, increasing the earth’s albedo and reducing earth’s heat accumulation by a certain percentage in comparison to former daylight hours over the USA.

With over 95% of their headwaters gone, the stretches of the Colorado and Yaqui rivers dry up within an hour or so. With over 50% of its drainage basin gone, and half of its width (to the thalweg line) cut off by the stasis field, the Mexican side of the Rio Grande/Rio Bravo gets 65-75% lower. The Great Lakes, and consequently, St. Lawrence river, lose any water coming from their drainage basins in the US. This should decrease the water level of both, although the Lakes draw about as much water from Canada.

Canadian and international fishermen have the waters off New England to themselves for now, though many American deep sea fishermen and whalers, who were out to sea for multiple night deep sea fishing at the time of the event, find now they are refugees you have to lodge in the Canadian maritimes.

Some American deep sea fishermen of the south need to do the same thing in Bermuda, the Bahamas, and Cuba.

The Gulf of Mexico’s waters are no longer getting replenished and enriched from the Mississippi River system.

In Mexico, the Juarista forces who had been gaining support and momentum in their zone of control in the north, along the US border, have now lost the benefits of the border as a source of arms supplies, fresh mercenary troops, and cross-border sanctuary, in their struggle against the French-backed Imperial Mexican forces of Maximillian. At this point, the Imperial regime has superficial control over the great majority of Mexican territory, while much of the public and many generals are of uncertain loyalty, while the Juaristas have some political supporters in many parts of the country, they can only maintain a territorially controlling fighting force in Baja California, northern Sonora, northern Chihuahua, north Coahuila, and far southern Mexico around Chiapas, Campeche, and Yucatan.

The absence of the United States immediately removes American stored grains, cotton, beef, hides, iron, and all other sorts of exports from global trade and takes a relatively affluent market of 35 million people away from the exporters of Britain, Europe, the Orient, and the tropics. This should lead to a spike in the price of grain futures.

The United States is gone as a destination for aspiring emigrants, affecting people in Ireland, Germany, and Great Britain the most.

In the spirit of daily life, high and low, going on, Bismarck’s power-political scheming against Austria continues, likely still leading to Prussian war against Austria and its allies in June-July 1866, Prussian victory, dissolution of the German Confederation, and establishment of the North German Confederation, to be followed over the next year by the Austro-Hungarian Compromise or Ausgleich. The Qing Dynasty and its loyalist supporters will also still be completing their defeat of the Taiping rebels this year.

In Mexico, the French will continue to support the Imperial Mexican forces of Emperor Maximilian against the Republican forces of Juarez. With the sudden disappearance of the United States, there are no threats of intervention, although the fear of supernatural disaster sits right next door, and from the summer onward, Napoleon III’s attention ins increasingly brought back to Europe by Prussia’s remarkable victory.

Canada is spared cross-border raids by Fenian Brotherhood guerrillas based in the United States.

But...

From August 28, 1866 to September 27, 1866, unobserved by humans, further strange things happen undersea. At the bottom of the USA stasis bubble, at a steady rate, as is if 3D-printing, the “floor” of the bubble recedes, replaced with an exact copy of the Indian Ocean floor and then deep sea layers on the opposite, ‘antipodal’ side of the world. Over the course of thirty days, from the bottom of the sea, to the top, the sea is restored, with layers of Indian Ocean water joining the Pacific and Atlantic and now able to flow freely into each other, with less and less getting blocked by stasis, allowing first deep sea currents, and shallow sea currents to begin operating.

In the meantime, as if 3D printing, the subterranean layers of the continental United States from March 27th, 1866 are being reconstructed from the ocean floor upward, beneath the Indian Ocean, antipodal to their old location in the northern and Western Hemisphere. This new rising earth is kept ‘dry’ and separate from Indian Ocean waters by a thin layer of stasis no more than one micron thick.

On the night of September 27th, 1866, the whole process speeds up and completes itself, with the entire surface world of the continental United States, and all of its inhabitants, as they were at the moment of their disappearance six months before, being reconstructed in an instant, in an antipodal position to their old location, in the middle of the Indian Ocean in the eastern hemisphere, with all surfaces being the correct height from sea level.



In that same instant, the remaining stasis bubble over the old United States shrinks to infinitesimal size and then disappears entirely, allowing winds to blow, waves to form on the ocean surface, and the vast new waters where the United States used to be to be navigated.

The Americans encounter the same experiences others around the world had months earlier, finding sudden cliffs into the sea along their international borders, the volumes of certain rivers, like the Columbia, sinking, as they are disconnected from some of their drainage bases, and so on. They further find the stars are out of place and magnetic compasses are backwards from the expected in terms of north-south. However, the weather, and regional weather differences, seem seasonally appropriate. The shadows seem to fall on the landscape strangely all through March 28th.

Within a few days, an American vessel off the west coast likely makes contact with a British or French one rounding the Cape into the Indian Ocean, or an American ship from the east coast encounters a ship traveling to or from Perth, Australia, and the occupants of one ship are astounded to find that America is back, the other ship are astounded America was ever gone and that the world thinks its September, all are astounded America is in the Indian Ocean.

America, and all its productive capacity, are back in the world. Thanks to the six month delay “synchronizing” the USA to the seasons of its new hemisphere, it is spared any catastrophic disruption of growing seasons and famine.

Nevertheless, this drastic, supernatural event sparks its own wave of millenarianism in America, and a second-wave in the rest of the world, this one slightly less pessimistic but still “God-fearing” and respectful of powers beyond human understanding and control.

Among the projects of the Bureau of Freedmen and Abandoned Lands in the new American “north”, formerly its south, are several to shift landscaping to accommodate changes to the changed angle of sunlight because of the north-south switch.

As mentioned earlier, despite the disruption, people still need to earn their bread and act like the next day will come, and that makes life go on.

In the United States, a country literally turned upside down, it still means that President Johnson and the Radical Republican Congress likely still polarize against each other.

In Mexico, the French can keep up a level of commitment, and importantly, naval support, to prop up Maxmillian, and outflank the Juarez Republican forces and suppress them for the foreseeable future.

In Santo Domingo, the Spanish have worn out their welcome and face revolt. The Spanish may decide to leave, but if they do, US pressure has no part in it, because the US is not there to apply it.

Canada is under less pressure to federate without the American menace, but it faces a near term geologic menace. With the opening up of the sea of the United States, the Great Lakes, if their beds are above sea level, may drain into the sea leaving vast mud flats blocking the ports of Ontario. The draining of the Great Lakes also would halt the flow of the St. Lawrence, land locking Montreal and Quebec. Substantial works would be needed to reconnect Canada’s cities, industries and rails to the ocean, or to render land reclaimed from the sea productive.

The Russian Empire can safely assume also that the United States down in the Indian Ocean, will not be interested in purchasing Alaska.

The new geography will affect trade patterns and economics: For the remainder of the 1860s, the US location in Indian Ocean, a longer journey than the Atlantic one from Britain, France, Belgium, and the German states, provides additional protection for American industry on top of the tariff, because of additional shipping costs keeping American manufactures more price competitive. However, distance from Europe works against the competitiveness of American cotton compared to Egyptian and Mexican.

American firms start selling and making reputations in Perth, Western Australia, then Southern Australia, Victoria, New South Wales, and eventually the Cape Colony, Natal, and New Zealand, and the Dutch East Indies, India and Swahili coast.

The replacement of the old USA with a vast water passageway makes a direct Britain and Western Europe to Japan and China trade route commercially viable. It also certainly voids any interest in any Central American isthmian canals.

However, given British and French sunk costs around the Indian Ocean littorals, and in the Suez Canal project itself, and newfound American industrial competition in that area, completing the Suez Canal work is just as urgent as ever. It should be completed no later than OTL’s scheduled time of 1869.



From the beginning, with it handling a share of American trade and migration, Suez Canal receipts should be higher every year of its early decades, and while it may be stressed by bottlenecks and need maintenance, receipts should fund it. There is a chance this all could keep the Khedive of Egypt solvent, which would be a geopolitical change.

In addition to strengthening the importance of the Suez Canal, the presence of the USA in the Indian Ocean should increase the importance of the Cape Colony as a stop over in USA-European trade.

I’m going to be optimistic that the British Empire will invest at adequate scale and speed to keep Canada connected to the seas and a usable economic asset. Once it is clear this is happening, Canada should actually be a great beneficiary of the removal of the United States from its neighborhood. Canada, as one of the cheapest overseas destinations from Europe, should attract a good share of the late 1860s and 1870s immigration that in OTL was bound for the United States from northwest Europe, increasing Canada’s workforce, and speeding the settlement and development of the Canadian prairie.

Presuming the Mexican Empire can be put on a firm footing before 1870, and be put into an early version of the stability we saw with the Porfiriato of OTL, and that this can survive France’s defeat at the hands of Prussia in 1870-71, Mexico may also attract many immigrants, especially Catholic ones, who in OTL otherwise would have gone to the United States.

With a working Suez Canal and increased steamship traffic volume as the 19th century wears on, I would expect immigration to the US to resume and grow. To some extent, the existence of anchor communities like Irish in the east and Chinese in the west and Germans in the middle may distribute immigrants somewhat along OTL lines. But the new geography and shipping lanes will encourage different patterns. In general, America’s gateway for “new” European immigration should be its west coast, San Francisco and Portland, not the east. Chinese and Japanese immigrants should be no more concentrated in the west than the Gulf Coast and east. New Orleans and Galveston would be be big immigration ports.

Meanwhile, immigration from India should become substantial generations sooner, along with Indians studying in America. And Americans looking for wide open frontiers will have their choice of frontiers. They will have their own west, but there may be enough choosing to move to Western Australia to affect the local culture.

Well to do and artistic American should remain interested in Europe for cultural reasons, and should be at least as equally interested in the Far East for trade and missionary reasons, but the new geography should enhance ATL Americans interest in southern and Eastern Africa, the Middle East, India, Southeast Asia, and Australia, a great deal, while making Latin America a lost, fading memory.


Other variants of the same idea -


Version 2. What if the USA (Lower 48) disappeared in September 27th 1914, and reappeared in March 27th, 1915 - in the Indian Ocean.

The physical aspects of the scenario are identical to the 1866 scenario, except that at the very beginning of the scenario, the Great Lakes are exchanged with saltwater patches of the deep Indian Ocean, and the St. Lawrence riverbed is replaced with a deep saltwater channel from the Indian Ocean. While fouling the Lakes and River as a source of potable water for drinking or irrigation, it keeps them available for navigation constantly through the period of the stasis bubble and then after its disappearance.

How do global economics and geopolitics proceed from there?



Version 3. What if the Lower 48 USA disappeared in November 5 1938, reappeared ion May 5, 1939, in the Indian Ocean

The physical aspects of the scenario are identical to the 1866 scenario, except that at the very beginning of the scenario, the Great Lakes are exchanged with saltwater patches of the deep Indian Ocean, and the St. Lawrence riverbed is replaced with a deep saltwater channel from the Indian Ocean. While fouling the Lakes and River as a source of potable water for drinking or irrigation, it keeps them available for navigation constantly through the period of the stasis bubble and then after its disappearance.

How do global economics and geopolitics proceed from there?



Version 4. What if the Lower 48 USA disappeared in November 5 1945, reappeared ion May 5, 1946, in the Indian Ocean

The physical aspects of the scenario are identical to the 1866 scenario, except that at the very beginning of the scenario, the Great Lakes are exchanged with saltwater patches of the deep Indian Ocean, and the St. Lawrence riverbed is replaced with a deep saltwater channel from the Indian Ocean. While fouling the Lakes and River as a source of potable water for drinking or irrigation, it keeps them available for navigation constantly through the period of the stasis bubble and then after its disappearance.

How do global economics and geopolitics proceed from there?


Well I'm only going to look at the 1866 scenario for simplicity but a hell of a lot of things to consider including four very important ones I don't think have been mentioned before.

a) With the US gone what happens to the N Atlantic ocean currents, especially the Gulf Stream? Screw with that and you could well have a new lce Age across much of Europe which would cause massive chaos and millions of deaths. Even changing the strength could have a lot of climatic impacts and cause much disruption, especially with food production.

b) Similarly with the US appearing in the Indian Ocean what impact does it have there? If you affect the Indian Ocean monsoon that could kill even more people than a new Ice Age in Europe.

c) With the removal of the US we have a continuous belt of water from about Japan eastwards to western Europe. As noted this could make for faster traffic between those two regions, although range could be an issue, especially as it would take a while for new ports to be established in S Canada or N Mexico. However could such a continuous stretch of water mean even larger storms, which might hit both coastal regions and also any ships seeking to travel this route.

d) What happens with plate tectonics? Is there still a stretch of the ring of fire, but now underwater between N Mexico and Canada? Or is it still with the western US? Might be simpler with the former as the latter leaves a continuous plate section between the Pacific and N American plate where none was before and also have a slice of plate boundary in the Indian Ocean. Similarly what happens with the tension in the plates? Could the sudden removal of the USA section prompt major actions in neighbouring sections, most likely the western part of Canada.

Assuming none of the above cause serious problems then other points that come to mind.

The US:
Its going to have some changes to climate but not sure how drastic. Its close to Antarctica but not that much further south than southern Australia which isn't known for an harsh climate so a lot could depend on the currents in the region. Also the key question is possibly how much rainfall is affected. Especially in the interior possibly.

As someone says if colder weather is prominent in the north [which is now the south but keeping to the current alignment to minimise confusion] then you could see a lot of people moving away from that region. The south will stay warm but the question is how wet? Too wet or dry and agriculture could be badly affected especially cotton, which is very demanding in how much water it requires. This could be a big factor on the economy of both the US and the world as if no major disruption its still going to be the primary supplier of cotton to the world but if its badly disrupted cotton supplies will be seriously disrupted. On the plus side if it continues as a major producer it could avoid the OTL Boll_weevil infestation that seriously impacted the industry a couple of generations later.

Trans-continental railways will still be built but probably delayed a bit as the prime reason for the 1st one, to get easily and quickly between the east and west coast has now been removed since ships can sail around the island that is now the US. True the north coast lacks ports and could be chilly and stormy. However the south as far as the old mouth of the Rio Grande already has ports and infrastructure.

I would expect less migration to the US over coming decades as its simply a lot further from Europe, which will be the lands the US most welcomes migrants from. Even with the Suez canal. I could see more people going to Canada, especially if the climate there improves and Catholics especially could be tempted to Latin America and possibly French N Africa. There might be some attempts at migration the other way as S Africa is pretty close here and you could see a desire to 'return' Africans to Africa - despite the fact the communities they were bought from were thousands of miles away in western Africa.

Politically there is likely to be tension between Britain and the US as the latter is now in a central position in the Indian Ocean, which was pretty much a British lake and now in a position to potentially threaten India, S Africa, Australia and the traditional trade routes to E Asia. Also you might see a fear that parts at least of Australia or southern Africa could become American by settlement, as was feared for parts of western Canada in this time period. True the US doesn't at this point have much of a blue water navy, most of its units being designed for coastal/river warfare but that could change if the US economy develops as OTL. I could see Britain seeking to secure control of the Suez Canal earlier than OTL to secure a quick route to the Indian Ocean both for trade but also possible military defence in this scenario.

Canada:
This is now the biggest island in the world and I would expect it to become bigger than OTL because it will gain the lake beds that were the Great Lakes and probably Alaska. [Russia might not want to sell it to Britain but it needs the money and gets rid of a drain on its resources while Britain is the only likely buyer now].

In the short term there will be serious problems however. They will lose the St Lawrence and the Great Lakes, important for both water and transport and it will take some time to recover from this while further west there is now a sea to the south but quite high cliffs which will mean difficulty getting contact with it for water or trade. Their height in the west will also restrict the potential increase in rainfall from the sea to the south. In the longer term, possibly aided by some landslides where the cliffs are high it should be practical to develop some of this coastline. It might also give some options for increased fishing and other maritime activities. Gut feeling is that without the US to the south and assuming no major disaster like the potentials mentioned above Canada should be a bit warmer and wetter which should help its development.

British Columbia, provided its not affected by a massive earthquake, could develop a lot quicker than OTL as its a lot easier to access and on a longer term also the Canadian prairies. Plus of course there's no US just to the south to continually lure south a lot of the population with its larger economy and better climate.


Mexico & Latin America:
The empire could survive here or it could still fall, especially if the Franco-Prussian war occurs and Prussia still wins. Its definitely got more chance to establish itself at least for the moment but securing a dynasty over the longer period could be more difficult. Its not helped by the clashes between the more liberal Maximilian and the more reactionary elements in Mexico that are his main 'supporters'. It might be more stable in the longer term without the US to the north.

Overall Latin America as a whole is going to be dominated by British influence for longer without the challenge of growing US interests. Over time other powers from Europe and possibly even the US as well are going to be greater economic challenges and also possibly fiscal ones but until their producing much larger navies Britain will still be the primary power here. Not sure what will happen with the continued Spanish possessions as their likely to linger for longer but assuming Spain continues its prolonged decline and especially if the 3rd Carlist war and resultant chaos occurs your probably likely to have it lose Cuba at some stage, as well as further afield probably the Philippines although they might end up selling the latter to a 3rd power.

Europe:

Apart from the confusion and disruption caused when news of the US's disappearance reaches them and then again when it reappears in the Indian Ocean and the resultant disruption of world trade even when contact is obtained again there probably won't be drastic changes early on, unless one of the climatic disaster's mentioned above occurs. How society and world views will change due to those supernatural events I don't know but its likely to have a stronger impact in the more conservative cultures.

I would expect the Austro-Prussian war to still occur and with a similar result. Whether the Franco-Prussian war also breaks out is less certain, especially if France is still concerned with maintaining its position in Mexico. In that case Napoleon III might not take the bait when Bismarck seeks to incite him to declare war. Or its even possible that if say the Mexican intervention wines down from say 1867 the return of veterans with recent battle experience could change things, or simply that the French leadership didn't make as many appalling errors as OTL it could avoid the crushing defeat of OTL. However probably still likely that France goes down to defeat as OTL.

How longer lasting butterflies affect things its difficult to know. The lack of the US plus a possible Franch success in Mexico might tempt other nations to seek to expand their influence and possessions in Latin America but this is likely to be opposed by Britain and even when its industrial leadership fades, which is still likely, its naval domination and the possession of bases in the region would still give it a strong position to block such actions. How migrant trends will develop without the US being as easily available would be a big issue as well.

Anyway initial ideas on a very interesting scenario. :)
 

Buba

A total creep
@stevep
There should be a Gulf Stream, as that is part of the North Atlantic Gyre.
In the Indian Ocean the NBL USA is south of the local gyre (as per Mk.I Eyeball) and should be far away enough from the Asian landmass as not affect the monsoon (at least "not affect much" - again Scientific Method i.e. the Mighty Eyeball :)).
Excellent point about Boll Weevil! Long Live King Cotton!
Other South American invaders are likewise affected ...

BTW - I'd expect Sonora, Chihuahua etc. i.e. the Mexican northwest to become wetter. Also, the Central Mexican plateau is now open to the north - so, also wetter? If yes, Mexico could attract many more immigrants than in OTL and become less "Latin American" and more "European"?
 

stevep

Well-known member
@stevep
There should be a Gulf Stream, as that is part of the North Atlantic Gyre.
In the Indian Ocean the NBL USA is south of the local gyre (as per Mk.I Eyeball) and should be far away enough from the Asian landmass as not affect the monsoon (at least "not affect much" - again Scientific Method i.e. the Mighty Eyeball :)).
Excellent point about Boll Weevil! Long Live King Cotton!
Other South American invaders are likewise affected ...

BTW - I'd expect Sonora, Chihuahua etc. i.e. the Mexican northwest to become wetter. Also, the Central Mexican plateau is now open to the north - so, also wetter? If yes, Mexico could attract many more immigrants than in OTL and become less "Latin American" and more "European"?

Good points. That would save the two prime disaster's I was thinking of although what interactions of currents there would be with such a large path between the Atlantic and Pacific I wasn't sure.

Ditto with Mexico as I should have thought of that. Could be a lot of water carrying clouds going through the American straits and depositing rain on the lands bordering it.
 

Buba

A total creep
Currents.
gyre.jpg

Oceanic_gyres.png


Looking at it, NBL USA might be in a BAAAD place - with cold currents both north and south of its location.
IMO cold currents are bad - think Patagonia, Namib Desert, Atacama Desert, Californian Madness, West Australian Desert - see a pattern there?
But still a toss up - it could have a nice warm current in the top end - making the Old South West verdant, with the ACC at the cold end.
It is possible that I did not eyeball correctly and the USA is inside the Indian Ocean Gyre, not south of it.
 
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stevep

Well-known member
gyre.jpg

Oceanic_gyres.png

Currents.
Looking at it, NBL USA might be in a BAAAD place - with cold currents both north and south of its location.
IMO cold currents are bad - think Patagonia, Namib Desert, Atacama Desert, Californian Madness, West Australian Desert - see a pattern there?
But still a toss up - it could have a nice warm current in the top end - making the Old South West verdant, with the ACC at the cold end.
It is possible that I did not eyeball correctly and the USA is inside the Indian Ocean Gyre, not south of it.

It looks to me - using the same sophisticated technical equipment you mentioned, i.e. the Mark 1 eyeball - that the northern region [now the southern] of the US would possibly be pretty much parallel with the cold current so that might get rather chilly although possibly push it a bit further south.

In terms of N America with the US gone we seem to have a cold current pushing down the Pacific side which might be diverted either east or west while on the Atlantic side you have the warm currents might push westwards rather than being diverted northwards along the [old] US coastline and then Canadian and then pushed towards Europe, In that cause it could also get very chilly in Europe! :eek:

Very useful maps thanks.
 

Buba

A total creep
Probably irrelevant, but ...
[cue old man ramblings]
Remember that depression in SE California, the Salton Sink?
Well, a wee bit of that depression is crossed by the US-Mexican border. Hence, at ISOT, a spillway is created. As the sill is composed of either aelian deposits or riverine silt (at least topmost layers, I have no idea how deep) it is washed away and the depression is filled inside a few days or weeks. The water supply is endless :)
San Diego is now on a peninsula ...
The weight of that water pressing on the convulted tectonics of the area - i.e. a web of faults - should trigger earthquakes.
Probably not relevant for 1866, but at the later dates such seismic activity might be bothersome to the locals.
Thinking of it, shouldn't California be ripped by earthquakes after ISOT, as the fault system had been "upset" by the dissapearance of its southernmost portion?
 
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