Across
- 3. first system of writing
- 4. large center of population
- 7. crescent fertile river valleys in Mesopotamia
- 8. age cold period on Earth
- 9. major city in Sumer
- 10. people who maintain leadership
- 11. rule of one territory
- 14. taming an organism
- 18. civilization organized human society
- 19. study of past events
- 20. selection breeding plants or animals
- 21. regionally organized society
- 22. study of features of Earth
Down
- 1. wild maize
- 2. architecture pyramids, temples, public places
- 4. human society with dense population
- 5. control of flow of water
- 6. region in Mesopotamia
- 12. earliest agrarian civilizations
- 13. power from below/above
- 15. living in one place
- 16. cultivating plants and animals
- 17. people settled in villages
- 20. era central focus is agriculture