OSMAR WOrld history puzzle

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Across
  1. 5. Ages
  2. 8. of Archduke Franz Ferdinand
  3. 10. Sources
  4. 11. War I
  5. 12. Right
  6. 13. Revolutions
Down
  1. 1. Revolution
  2. 2. Theories
  3. 3. Method
  4. 4. Contract
  5. 6. Monarchs
  6. 7. War I
  7. 8. Revolutions
  8. 9. Valley Civilizations