Across
- 7. metal made from copper and tin
- 9. the period of history before writing
- 10. area where cities usually formed due to water access
- 13. lifestyle early humans lived. Didn't stay in one place
- 14. where scientists say humans first originated
- 15. government ruled by a king/queen. One of the first types of governments
- 17. bronze age invention
- 18. Name of land bridge that was used to migrate to the Americas
- 19. people whose job was to write things down
Down
- 1. early mesopotamian writing system
- 2. cold period that allowed humans to migrate from Asia to America
- 3. complex society with government, religion, and cities
- 4. where many early civilizations developed. "Between two rivers"
- 5. literally means "new stone"
- 6. the process of taming animals and making them useful
- 8. common crop grown across the world
- 11. job of most early humans
- 12. the process of people being able to do different, more specific jobs
- 16. when you have more of something than you need