Across
- 3. river that empties into the Mediterranean Sea
- 7. located outside the city wall
- 8. low lying, flat land
- 11. Mesopotamians moved from here to the river valley
- 12. main reason for fighting between city-states
- 15. created to store water for later use
- 16. region in the Middle East; shaped like
- 17. very fine mud
- 19. one of the rivers within the Fertile
- 21. forced people to move from the foothills to the river valleys
Down
- 1. surrounds a city-state for protection
- 2. brought water to the crops from the river
- 4. Sumerians built this to control the
- 5. "land between the rivers"
- 6. special gates that raised and lowered the water levels in a canal
- 9. independent self-governing city
- 10. are poked into the leeves to allow water to flow farmland during droughts
- 13. controlled the flow of trade on the Persian Gulf
- 14. earth walls to help prevent flooding
- 18. Oldest Mesopotamian settlement
- 20. modern-day country in which Mesopotamia is located