early humans

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