World War I

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Across
  1. 3. — Deep ditches that defined Western Front warfare
  2. 5. — Intense pride in one’s nation that increased tensions in Europe
  3. 7. — British passenger ship sunk by Germany in 1915
  4. 8. — His assassination in Sarajevo sparked World War I
  5. 9. — Competition for colonies that heightened rivalries among European powers
  6. 11. — Rapid-fire weapon that made charges deadly
  7. 13. — Mandatory military service in many nations during WWI
  8. 15. — One of the MAIN causes; nations promised to support each other
  9. 16. — Territory between opposing trenches
  10. 19. — Number of points in Woodrow Wilson’s postwar plan
  11. 20. — German emperor during World War I
Down
  1. 1. — Preparing a nation’s troops and supplies for war
  2. 2. — German submarine that threatened Allied shipping
  3. 4. — Building up armed forces; contributed to tension before WWI
  4. 6. — First name of the assassin who killed the Archduke
  5. 10. — Used by governments to shape public opinion during the war
  6. 12. — Neither side gaining ground on the Western Front
  7. 14. — Organization created to promote international peace after WWI
  8. 17. — First name of the heir to the Austro-Hungarian throne assassinated in 1914
  9. 18. — New weapon first mass-used in WWI