Answer:
a nomad
Explanation:
The definition of a nomad is a person or group of people without a designated home who roam around in search of food and pasture land. A person who moves from place to place without having a permanent home is an example of a nomad.
they all led to the rise of civilizations
The land was rugged containing Andes mountains, the coastline deserts, and the Amazon jungle. They eventually found solutions for their geographic problems. I hope this helps :)
The US and the Soviet Union
