WWI Crossword puzzle

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Across
  1. 1. The serbian terrorist group that trained Gavrilo Princip
  2. 3. soldiers stayed here for protection
  3. 4. A policy of extending a country's power and influence through diplomacy or military
  4. 5. German boats used in war
  5. 9. the last central power to leave the war
  6. 11. Who was the 28th president of the United States in World War One?
  7. 13. a philosophy or system that emphasizes the importance of military power
Down
  1. 2. Germany, Ottoman empire,Austria-H
  2. 6. treaty that stopped wwi
  3. 7. assassinated Archduke Ferdinand
  4. 8. serbias reason to gain freedom
  5. 10. one sided information created to keep people supporting the war
  6. 12. dropped out of war