Mesopotamia Crossword Puzzle!

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Across
  1. 2. slow, calm river
  2. 4. Wanted to become immortal
  3. 5. known as one of the best inventions
  4. 6. Fast flowing river
Down
  1. 1. way to move around, good to move in war
  2. 3. Ancient language, symbolic
  3. 7. An emperor