Across
- 2. Period where the wheel was invented
- 5. This place is surrounded by two rivers
- 6. The religion of early civilizations was this
- 9. A temple in river civilizations
- 10. Early humans made tools from this
- 13. Name of Sumerian writing
- 15. Who rules in river valley civilizations
Down
- 1. Period where fire was discovered
- 3. early civilizations are all built around these
- 4. What is the name of a large cultural area with a common identity
- 7. Name of Egyptian writing
- 8. early art was made in these
- 11. An important part of evolution was the development of these
- 12. Period where agriculture was invented
- 14. Name of the first city