| A | B |
|---|
| Migrate | travel |
| Culture | a set of beliefs and way of life that is special to a certain group |
| Hunter-gathers | traveled to hunt and gather food |
| Agriculture | the system of growing crops for food |
| Civilizations | cultures with complex ways of life |
| Irrigation | systems for bringing water to dry fields |
| Adapt | to change in order to life in a new place |
| Bison | a large animal that once roamed the plains by the millions |
| Economy | system by which a group makes |
| Nomad | people who moved often to search for food |
| Government | the system by which nations and other groups make laws and carry out the affairs of citizens |
| Council | a decision-making body that makes decisions for the good of the group |
| League | a group whose members share the same goals |
| Ancestor | a relative who lived in the past |
