World war I Crossword Puzzle

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Across
  1. 2. Took place in the late spring of 1915, soon after Italy’s entrance into the war on the Allied side
  2. 4. Russian forces invaded the German-held regions of East Prussia and Poland
  3. 5. Sunk several commercial and passenger vessels, including some U.S. ships.
  4. 6. One of the world’s deadliest global pandemics
  5. 11. Posters that tried to persuade men to join friends and family who had already volunteered by making them feel like they were missing out
  6. 13. Commander of the American Expeditionary Force
  7. 15. A treaty signed on June 28 1919
  8. 16. This man got assassinated
  9. 19. Fought from September 6-9, 1914, French and British forces confronted the invading Germany army
  10. 20. He assassinated Archduke
Down
  1. 1. president during the start of WWI
  2. 3. he wrote a telegraph or note
  3. 7. Commanded British forces at the Battle of the Somme
  4. 8. A ship that was blown up with a torpedo
  5. 9. they were built in a zig-zag pattern
  6. 10. this machinery was used in trench warfare
  7. 12. statement of principles for peace that was to be used for peace negotiations in order to end World War I.
  8. 14. This country had great naval strength
  9. 17. This country attacked the U.S. on multiple occasions
  10. 18. A German leader