| A | B |
| surplus | an extra amount |
| irrigation | artificially bringing water to land to increase plant growth |
| city-state | a city with surrounding countryside that has the same leader of religious, political, economic, and cultural life |
| levee | natural earth (dirt) walls built next to bodies of water to prevent flooding |
| canal | manmade waterway |
| dams | barriers that control water |
| reservoirs | water-collectionpools that store excess water for future use |
| scribe | a public clerk whose job is to copy down information; only wealthy, young men were trained in special schools |
| cuneiform | a wedge-shaped writing (done with w stylus) on clay tablets |
| pictograph | a symbol that stands for a real object (it is not an exact representation of the object, but is close enought that people can immediately recognize them) |
| stylus | a reed with a wedge-shaped tip used for pressing on clay to write |
| pre-history | events that occurred before there were written records |
| history | written records for events |
| religion | the relationship between people and the god(s)/goddess(es) they worship |
| ziggurat | Mesopotamian religious temple at the center of a city |
| hierarchy | any system of persons or things ranked one above another |