[spinlock]

South America was also much more populous than North America. I suspect we weren’t as successful at eliminating stouthearted americas culture.

[bpodgursky]

It's kind of unclear. It's also possible that because of the slower exploration and settlement of North America, we simply never saw the large societies before they collapsed from disease (especially true of the Mississippian cultures) — Europeans only came through in force a hundred years later.

[spinlock]

It’s so unclear. There’s so much we don’t know about America it’s pretty insane.