What was the first civilization?

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Tags

1. #earliest
2. #developing
3. #states
4. #millennium
5. #around
6. #first
7. #began
8. #appeared
9. #pictographs
10. #civilization
11. #mesopotamia
12. #cuneiform
13. #cities
14. #complex
15. #located
16. #script
17. #sumer
18. #these
19. #writing
20. #known
21. #system