It’s roughly 100 times more than a stone age culture could support, and there is absolutely no evidence for it. The “high count” claims are no better than afro-centric “history” that claims that Cleopatra was black and that 60 million blacks died and were thrown into the Atlantic in the middle passage, which accounts for sharks today still swimming the slave trade routes. It’s all rubbish that credulous conservatives will buy if they see it on a cable channel and run into it enough in print.
But it’s not A stone age culture. It’s a whole bunch of tribes sometimes trading with each other. In a land of plenty. The general theory for why Indians didn’t get past the stone age because they didn’t need to. Need is a big driver for technology, if you’re in an area where farming and hunting are easy you lack need.
Given the area Cleopatra might not have been black but she probably wasn’t white either. She was probably either mid-eastern brown or black. And we know slaves were thrown overboard, how many who knows, as for sharks well we know that human flesh is actually not fatty enough to be nutritious for sharks so no they probably aren’t hanging out there waiting for more people to get thrown overboard.
The native Americans were, perhaps a stone age culture, but they had some very interesting horiculture.
Corn, Potato, Tomato, Squash varieties provided nutritional opportunities not available in Europe at that time.
Africa also had some very interesting domesticated plants, to include some 70 variants of the banana.