What is the leading theory about how early humans arrived on the American

Question

continents?

Answer 1

I can give you all the answers

1. They walked from Asia to North America over a strip of land that has since been covered by the ocean.
2. Farming encouraged native cultures to build more permanent shelters and communities.
3 (two answers). They were advanced in mathematics and astronomy. + They built magnificent cities and stone temples.
4. the eastern woodlands of North America
5. Lakotas