WWI crossword puzzle

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Across
  1. 4. the protection of merchant ships from U-boat-German submarine-attacks by having the ships travel in large groups escorted by warships
  2. 5. a statement of principles for peace that was to be used for peace negotiations in order to end World War I
  3. 7. Archduke of Austria Hungary assassinated by a Serbian in 1914. His murder was one of the causes of WW I
  4. 9. a strong feeling of pride in and devotion to one's country
  5. 10. A British passenger ship that was sunk by a German U-Boat on May 7, 1915. 128 Americans died. The sinking greatly turned American opinion against the Germans, helping the move towards entering the war
  6. 11. a policy in which a strong nation seeks to dominate other countries politically, socially, and economically
  7. 15. a biased type of communication
  8. 16. one of the largest movements of people in United States history
  9. 18. The first and only Welshman to hold the office of Prime Minister
  10. 19. American financier and statesman
  11. 20. a policy of glorifying military power and keeping a standing army always prepared for war
Down
  1. 1. a group of people with similar political ambitions—can seek to create its own independent government or state
  2. 2. American Republican politician, historian, and statesman from Massachusetts=
  3. 3. signed by Germany and the Allied Nations on June 28, 1919, formally ending World War One
  4. 6. In World War I the alliance of Germany and Austria-Hungary and other nations allied with them in opposing the Allies
  5. 8. a United States government agency established on July 28
  6. 12. a levy on a defeated country forcing it to pay some of the war costs of the winning countries
  7. 13. Commander of American Expeditionary Force of over 1 million troops who insisted his soldiers fight as independent units so US would have independent role in shaping the peace
  8. 14. a form of warfare in which opposing armies fight each other from trenches dug in the battlefield
  9. 17. served as the head of the United States Committee on Public Information, a propaganda organization created by President Woodrow Wilson during World War I