Question

Which factor encouraged some of the earliest humans to travel to North
America?

Answer 1

Drought, flood, and temperature changes could certainly push people to move on.

Step-by-step explanation:

Climate change also affects the food supply, and anthropologists have assumed that people came to the Americas because they were following food on the hoof.

Answer 2

The ice covering most of the northern part of North America melted.

Step-by-step explanation:

The land bridge allowed humans to reach North America, but they couldn't move farther south until the ice started to melt.