Across
- 5. German submarine
- 6. Campaign, failed Allied attempt to capture Constantinople
- 7. Hungary, dual monarchy where the war began
- 8. Telegram, message that helped bring the U.S. into the war
- 10. Battle known for its massive casualties
- 12. Britain, France, Russia, Italy, and later the U.S.
- 14. Agreement that ended the fighting on November 11, 1918
- 16. Site of several major battles in Belgium
- 17. Battle where Germany defeated Russia
- 19. Franz Ferdinand, Austrian leader whose assassination sparked the war
Down
- 1. Germany, Austria-Hungary, Ottoman Empire, and Bulgaria
- 2. Treaty that officially ended the war
- 3. Country accused of involvement in the archduke's assassination
- 4. British passenger ship sunk by a German submarine
- 9. Combat characterized by fighting in trenches
- 11. of Nations, international organization proposed by Wilson
- 13. Fourteen Points, peace plan proposed by the U.S. president
- 15. Plan, Germany's strategy for a quick victory in the west
- 18. Longest battle of the war, fought in France
- 20. Nickname for American soldiers in the war