Civilization vocabulary crossword puzzle

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Across
  1. 3. the river on the left of Mesopotamia
  2. 5. an ancient region between the Tigris and Euphrates rivers
  3. 6. The action of selling or doing a service for a favor.
  4. 7. the river on the right of Mesopotamia
  5. 9. A source that is needed to survive.
  6. 10. The looks, holidays, foods, actions, and beliefs.
Down
  1. 1. this is an old city that is still starting to grow.
  2. 2. A mountain range that runs between India, Tibet, and China
  3. 4. The longest flowing river that goes down Egypt.
  4. 8. having extra of something.