Leland Goode's WWI Crossword Puzzle!!!1!!

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Across
  1. 1. when the US joined the war
  2. 4. the feeling of one's country being better than others
  3. 5. this country switched sides during the war
  4. 7. the US continued to trade with this country after the war broke out
  5. 9. the assassin who killed Franz Ferdinand
  6. 10. African American soldiers who got no credit during the SAW and WWI
  7. 11. starts with a G, and they were on the central powers
  8. 12. the winners of The Great War
  9. 13. the organization that Woodrow Wilson proposes to achieve his goal
  10. 14. an agreement to stop fighting
Down
  1. 2. a British ship; 1198 deaths
  2. 3. the meeting to end World War 1
  3. 6. the leaders of the Allies were known as this
  4. 8. used for the first time in warfare
  5. 12. the country who did not sign the Treaty of Versailles