| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | city-state | Ancient Mesopotamia | A city that is part of a larger empire or kingdom | 1 |
| 2 | city-state | Ancient Mesopotamian culture | Mesopotamia was home to some of the earliest city-states, such as Uruk and Ur, which represented independent urban centers governing surrounding regions | 1 |