Across
- 4. month America joins the war
- 6. pride in one's country
- 10. man who assassinated Franz Ferdinand
- 11. month WWI started
- 13. what planes were mainly used for at the start of the war
- 15. cruise liner sunk by a German submarine
- 16. invention used to synchronize the guns and the propeller
- 19. famous author who fought in WWI
- 20. telegram sent to Mexico from Germany asking them to join the war
- 21. battle that took over one million soldiers lives
Down
- 1. royal prince of Austria-Hungary]
- 2. the domination of one country by another country
- 3. Serbian Terrorist Group
- 5. general who devised the Schlieffen plan
- 7. Germany,Austria,Italy
- 8. German man who wanted to use poisonous gas
- 9. Britain,Russia,France
- 12. belief that a country should have a strong military
- 14. longest battle of the war
- 17. German submarine
- 18. country Germany invaded to get to France