World War I

1234567891011121314
Across
  1. 2. A German Submarine
  2. 5. Treaty imposed on Germany by Allied Powers; ended the Great War
  3. 9. A major characteristic of WWI fighting; used to prevent loss ground during a battle
  4. 11. Bombs developed to combat German U-boats
  5. 12. Killer of Franz Ferdinand
  6. 14. Great Britain, Russia, U.S., France, and Italy; opposed Germany and its allies.
Down
  1. 1. The end of WWI; now replaced by Veterans day in the U.S.
  2. 3. The official time, down to the minute, when fighting ceased in the trenches on November 11
  3. 4. Message that said Mexico should attack the U.S. if the U.S. went to war with Germany
  4. 6. The heir to the Austro-Hungarian throne; assassination sparked WWI
  5. 7. American ship sunk by German U-boats persuading the U.S. to join the war
  6. 8. A from of chemical warfare used in WWI
  7. 10. U.S. President during WWI
  8. 13. Germany, Austria-Hungary, Bulgaria, and Ottoman Empire; opposed the Allied Powers