Crossword Puzzle--Sumerian Civilization

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Across
  1. 2. A resource or a source of action that benefits the entire community
  2. 4. A wall of earth built to prevent flooding
  3. 6. A group of city-states in southern Mesopotamia that was a cradle of civilization
  4. 8. Particles of rock that clog irrigation systems
  5. 10. The way that a civilization is organized based on status
  6. 11. A settlement that is like a country with its own government; it controls farmland around it
  7. 12. A society marked by developed arts, sciences, government, and social structure
  8. 15. Land between two rivers
  9. 16. A river to the northeast of the Fertile Crescent
  10. 17. Valuing one's skills or talents; having value within a community
Down
  1. 1. A group of people with a sense of belonging who support one another
  2. 3. A human-made pool used to store water
  3. 5. A river to the southeast of the Fertile Crescent
  4. 7. The use of tools and other inventions for practical purposes
  5. 9. A system of canals for watering fields for farming
  6. 13. Related to keeping people safe
  7. 14. A dug out canal around a city to protect it from invaders