1. What is the leading theory about how early humans arrived on the American continents? (1 point) O They walked from Africa to South America when those two continents were part of the same landmass.
They walked from Asia to North America over a strip of land that has since been covered by the ocean
They sailed in large ships from Australia to North America.
They canoed from Antarctica to South America when the climate there became too harsh.

How did the invention of the cotton gin affect slave labor in the united states? a. there was a forced migration of slaves from the south to the north. b. slave-owning cotton planters were gradually forced to sell their plantations. c. more slaves were purchased to work on cotton plantations in the south. d. the reduced need for labor on cotton plantations led to a decline in slavery. e. slaves were moved from cotton plantations to sugar plantations.

Abody of water that is surrounded by land on three sides and leads to a larger body of water is called

Which statement might have been made by an anti-federalist?