History Crossward Puzzle

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Across
  1. 2. Nabopolassar's son
  2. 5. a group of many different lands under one ruler
  3. 6. forcing payment from conquering people
  4. 7. a large empire located on the eastern banks of the Euphrates River
Down
  1. 1. an ambitious leader who ruled the Akkdians
  2. 3. lived in the region west of Mesopotamia
  3. 4. the Babylonian king