Across
- 9. group of many different lands under one ruler.
- 11. the Babylonian king.
- 12. people who study the heavenly bodies.
- 13. a way of watering crops.
- 14. complex societies.
- 15. weapons, tools, and other things made by humans.
- 18. the development of different kinds of jobs.
- 19. traces of plants or animals that have been preserved in rock.
- 20. the land between the rivers.
Down
- 1. consists of hundreds of wedge-shaped marks cut into damp clay tablets.
- 2. tools and methods to help humans perform tasks.
- 3. scientists who dig underground where settlements might have been once.
- 4. people who study and write about the human past.
- 5. groups of traveling merchants.
- 6. skilled workers who made metal products, cloth, or pottery.
- 7. people who regularly move from place to place.
- 8. one of the oldest known community in the Middle East.
- 10. political districts.
- 15. scientists who focus on human society.
- 16. record keepers.
- 17. tame animals or plants for human use.