World War I Crossword Puzzle

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Across
  1. 7. allowed amount
  2. 10. his assassination cause the war
  3. 12. includes Germany, Austro-Hungry, and the Ottoman Empire
  4. 13. a change in the government
  5. 14. includes Britain and France
  6. 15. a situation were each side cannot win
  7. 18. a piece of land that no one owns
  8. 19. Wilson's proposal for peace
  9. 20. a submarine used by the Germans
Down
  1. 1. agreement of Germans to warn anyone before they sink a ship
  2. 2. borrowed money to pay for the military
  3. 3. an opinion to convince others
  4. 4. weapons used in warfare
  5. 5. boats used to escort other boats
  6. 6. an alliance with Germany and Mexico against America intercepted by Britain
  7. 8. a group to keep the peace and prevent war
  8. 9. a battle fought in trenchs
  9. 11. the day America entered the war
  10. 16. one of the largest battles
  11. 17. a nickname for soldiers