Mesopotamia inventions

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Across
  1. 4. The branch of science that deals with celestial objects, space, and the physical universe as a whole.
  2. 7. Form of impression seal, a category which includes the stamp seal and finger ring seal.
  3. 8. You wouldn't have specialized jobs without me.
  4. 9. Scribes use this kind of writing style.
  5. 10. You used me before GPS were made.
  6. 13. You would not have scribes without me.
  7. 14. Some houses are made out of this stone material.
  8. 15. You use me to mail letters.
  9. 16. ____ flies when you're having fun.
Down
  1. 1. You use me to break up soil.
  2. 2. You would not know where you are without me.
  3. 3. Monopoly is a _____.
  4. 5. You would need me for your crops.
  5. 6. They drank this instead of water.
  6. 7. You would not know what day it is without me.
  7. 11. The science or practice of drawing maps..
  8. 12. You would not know what you receive in trades.