| A | B |
| polytheism | worship more than one God |
| silt | dirt carried in water; deposited as sediment |
| irrigation | supply of water to help crops grow |
| city-state | city and its territory form an independent state |
| social class | division of a society based on social and economic status |
| tribute | an act or gift to show gratitude |
| ziggurat | rectangular tower with temple on top |
| cuneiform | ancient writing system |
| province | administrative division of an empire |
| surplus | left over when requirement has benn met |
| architecture | buildings and physical structures |
| empire | grou of states under one, supreme authority |
| epic | long poem, one derived from ancient, oral tradition |
| caravan | group traveling together across the desert |
| scribe | a writer in ancient times |
| astronomer | expert in study of astronomy (space) |
| military | armed forces of a country |
| code | system of words, letters, symbols |
| region | an area with definable characteristics |
| complex | many different, connected parts |