OATS and Mesopotamia

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Across
  1. 2. a tool that broke through soil that improved farming
  2. 4. recycling bottles is an example of this
  3. 7. the world's first system of writing
  4. 9. picture symbols that represented an idea
  5. 11. a worker has a specialized task
  6. 12. sharp tools used on clay tablets
  7. 13. the arc of fertile farmland
  8. 16. supplying water to an area of land
  9. 18. Sumerian invention that led to the cart and plow
  10. 19. computers are an example of this
  11. 20. a long poem that tells of a hero
  12. 21. more than is needed
Down
  1. 1. a name meaning land between two rivers
  2. 3. a river in Mesopotamia
  3. 5. a pyramid-shaped temple
  4. 6. a mythical creature who appeared on ancient maps
  5. 8. man-made waterways
  6. 9. the empire state building
  7. 10. a mixture of soil and small rocks
  8. 12. the symbol for a capital city on a map
  9. 14. two people arguing
  10. 15. a worker who was a writer
  11. 17. the science of building