Amazonia would be an attractive place to settle during the Younger Dryas. Head South, young man!
See Charles Mann’s book “1491.”
Yes. North America was pretty much a mess.
I find it interesting how many scholars resist the concept that Man was all over Asia, Europe, and Africa...but none of them were smart enough to get to North America until the “land bridge” of the ice age?
Not sure that makes sense anymore?