World War I

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Across
  1. 3. Payments made by defeated countries after war.
  2. 7. British passenger ship attacked and sunk by Germans.
  3. 9. An international peacekeeping organization proposed by Wilson and founded in 1920.
  4. 11. Building up armed forces to prepare for war.
  5. 12. Law requiring men to register for military service.
  6. 13. Having merchant ships travel in groups protected by warships.
Down
  1. 1. Agency to improve efficiency in war-related industries.
  2. 2. A kind of biased communication designed to influence people's thoughts and actions.
  3. 4. The 1919 treaty that ended World War I.
  4. 5. Movement of many African Americans to northern cities from the South in the early 1900s.
  5. 6. A devotion to the interests and culture of one's nation.
  6. 8. Wilson's plan for world peace following World War I.
  7. 10. Truce agreement.