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Sorry champ but. New evidence that an extraterrestrial collision 12,800 years ago triggered an abrupt climate change for Earth And to add. Humans were in North America thousands of years before the so called us killing them out...

The Human hunting Megafauna to extinction has fallen out of favor for some good reasons. 1 the most common Megafauna in North America were not Mammoths or even Bison. It was Camels and Horses. And no mass kill sites have been found for them. None. 2 mounting evidence of an asteroid strike in the...

Maybe easy in Eurasia but North America was a far more deadly place. The same with Africa. Eurasia did not get some of the deadly beasts that were here in NA. For instance Europeans did not have to deal with 25ft Long Alligators and Crocodiles. My Ancestors did. Edit: And Prehistoric Man did...

Yeah about that Let's just say my ancestors would have jumped at the chance for and Uplift. Pleistocene North America was a Death World. Being a Hunter Gatherer here sucked. So much so that ancient stories from those times still exist talking about how much it sucked.

Sounds like the Humans in that novel were idiots.

Points to Alien Space Bats. Now that you know who is giving them stuff roll with the scenario.

In this scenario 200,000 years ago in Africa a genius member of a random tribe invents a method for making Bronze weapons and tools. This knowledge slowly spreads to other hunter gather tribes in Africa. So that a century later most of the Homo Sapiens in Africa use bronze weapons and tools...