World War I

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Across
  1. 4. Country whose invasion caused England to join the war
  2. 6. Protection from machine-gun fire
  3. 10. Austro-Hungarian prince who was assassinated, starting world war I
  4. 11. Signed in 1917, officially ended the fighting on the Western Front
  5. 12. Where most of the fighting took place from on the Western Front
  6. 13. A country's desire to have the strongest army
  7. 14. Country whose nationalistic desires led to conflict with Germany
Down
  1. 1. Economic system that overtook Russia following the Russian Revolution
  2. 2. Another name for World War I
  3. 3. Location where the peace treaty of the war was signed
  4. 5. Worldwide organization formed to try to maintain peace
  5. 7. Technology that caused the most deaths in the war
  6. 8. The last Czar of Russia
  7. 9. Term used to describe where fighting takes place
  8. 10. New technology known to cause PTSD in soldiers