Across
- 2. widespread lack of food
- 5. gradual wearing away of soil and rock
- 7. a wall built along a river to prevent flooding
- 8. first civilization
- 10. most people died before _____ years old
- 11. ______ were known as cruel warriors
- 14. area of flat land that rises above
- 15. a long period of dry weather
Down
- 1. river that flows through eastern part
- 3. fertile ___ region in SW Asia
- 4. animal kept by farmers
- 6. between the rivers
- 9. watering of dry land by pipes and canals
- 12. mixture of tiny bits of soil and rock
- 13. river that flows through southern part