Across
- 1. an independent city and surrounding areas that has its own government and is seperate from nearby countries
- 3. one of the main rivers
- 6. bottom of the social pyramid
- 7. top off the social pyramid
- 8. people who keep records, in the middle of the social pyramid
- 10. the practice of growing crops and raising livestock
- 11. 4 letter invention
- 13. one of the main rivers
- 15. having the ability to produce or support the growth of something
Down
- 2. an extra amount of something
- 4. 8 letter invention
- 5. means "land between rivers"
- 9. a society having things like a system of government and written language
- 12. 5 letter invention
- 14. the supply of water to land by man made means