Across
- 5. to build (usually some kind of structure, such as a house)
- 6. an early city that was like a small, independent country with its own laws and government
- 8. the other of the two largest rivers in Southwest Asia that flow from the mountains in Turkey to the Persian Gulf
- 9. in ancient times, the geographic area located between the Tigris and Euphrates rivers
- 11. a wall of earth built to prevent a river from flooding its banks
Down
- 1. a means of supplying land with water
- 2. to keep something in good condition by making necessary repairs
- 3. one of the two largest rivers in Southwest Asia that flow from the mountains in Turkey to the Persian Gulf
- 4. fine particles of rock
- 6. arranged in a difficult way
- 7. a strong disagreement
- 10. an area in southern Mesopotamia, where cities first appeared
