Ancient Mesopotamia Crossword puzzle

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Across
  1. 2. One of the rivers around Mesopotamia
  2. 5. A system invented to tell time
  3. 8. (verb) An invention made 3200 B.C.
  4. 9. The smallest country surrounding Mesopotamia
  5. 10. A shape that was invented in Mesopotamia
Down
  1. 1. Signs or pictures in the sky
  2. 3. An empire that was attacked
  3. 4. Someone who attacked Babylon and took over
  4. 6. A place where a battle situated 660-650 B.C.
  5. 7. The land between two rivers