| A | B |
|---|
| Nomads | people have temporary shelter and often move |
| hunters and gatherers | early people that hunted for meat and gathered foods |
| civilization | complex society with various distinct characteristics |
| neolithic revolution | the event when humans learned how to farm and domesticate animals |
| agricultural revolution | the event when humans learned how to farm and domesticate animals |
| domestication | to tame animals especially for food, travel and work |
| Tigress River | located in Mesopotamia or modern day Iraq |
| Euphrates River | located in Mesopotamia or modern day Iraq |
| Nile River | longest river in the world, located in Egypt |
| Indus River | river located in northern India |
| Ganges River | river located in southern India |
| homo sapiens | modern humans |
| homosapien | intelligent human |
| mesopotamia | modern day Iraq |
| hunter and gatherers | ancestors were in survival mode, by gathering wild food and hunting |
