World War I

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Across
  1. 2. soldiers
  2. 8. building up militaries to protect colonies over seas
  3. 12. extreme pride in one's country
  4. 14. english passenger ship sunk by germany
  5. 15. assassination caused WWI
  6. 17. reduced the threat of U-boats
  7. 20. formed with other countries to protect each other
  8. 21. german submarine
Down
  1. 1. when encountered with this, one must wear a gas mask
  2. 3. to give up
  3. 4. competition for colonies as a source for raw materials
  4. 5. germany, austria-hungary, italy
  5. 6. telegraph from germany to mexico
  6. 7. he kept us out of the war
  7. 9. britian, france, russia
  8. 10. the space between trenches
  9. 11. serbian terrorist group
  10. 13. a disease caused by poor conditions in trench
  11. 16. used by troops for protection
  12. 18. countries who do not choose a side
  13. 19. where ferdinand was killed