| A | B |
| Prehistory | Period before written records |
| Nomads | People who wander from place to place in search for food |
| Barter | Way of trading goods and services without money |
| City-State | A city and its surround lands functioning as an independent political unit |
| Cultural Diffusion | The process of new ideas and products spreading from one culture to another |
| Monotheism | Belief in one god |
| Polytheism | Belief in many gods |
| Ziggurat | Pyramid shape monument which means "mountain of god" |
| Tribute | Payment conquered people were forced to make to their conquerors |
| Archaeologist | An expert who excavates, identifies, and studies the remains of ancient cultures to reconstruct a picture of life in the past |
| Paleontologist | An expert who studies the hardened form of life called fossils that existed in prehistoric times |
| Historian | An individual who attempts to create a believable explanation for the past based on present day records, materials, and artifacts |
| Artifacts | Usually simple objects such as tools or ornaments showing human workmanship or modification |
| Society | A network of people who interact with one another on a regular basis. People within a society may belong to many different cultures |
| Culture | A way of life that a group of people develop and pass on to their children |