| A | B |
|---|
| hominids | Early human-like creature that walked upright on two feet |
| nomads | A person who moves from place to place without ever living in a permanent location |
| Ice age | a long period of reduction in the temperature of the Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and large glaciers. |
| Domesticate | the taming of animals such as sheep, dogs, cattle, goats, etc. |
| Subsistence Farming | farmers focus on growing enough food to feed themselves and their entire families. |
| ziggurat | a rectangular tiered temple or terraced mound |
| migrate | Move from one area to another |
| specialization | the process of concentrating on and becoming an expert in a particular subject or skill |
| Polytheism | belief in multiple gods |
| Cuneiform | Sumerian system of writing made up of wedge shaped markings |
| city-state | Independent, State made up of a city and the surrounding villages. |
| scribe | someone employed to make written copies of documents |
| irrigation | The process of supplying water to areas of land to make them suitable for growing crops. |
| Paleolithic | The period of the Stone Age associated with the evolution of humans. "Old Stone Age" |
| Neolithic | The period of the Stone Age associated with the ancient Agricultural Revolution. "New Stone Age" |
| Bronze Age | a period of human culture between the Stone Age and the Iron Age, characterized by the use of weapons and implements made of bronze |
