Across
- 3. a wall of earth built to prevent a river from flooding its banks
- 4. an area in southern Mesopotamia, where cities first appeared
- 7. a means of supplying land with water
- 8. an early city that was a small, independent country with its own laws and government
- 9. a resource that can be used to make something else
- 10. one of the two largest rivers in Southwest Asia that flow from the mountains in Turkey to the Persian Gulf
Down
- 1. in ancient times, the geographic area located between the Tigris and Euphrates rivers
- 2. one of the two largest rivers in Southwest Asia that flow from the mountains in Turkey to the Persian Gulf
- 5. to keep something in good condition by making necessary repairs
- 6. fine particles of rock