WORLD WAR ONE ESCAPE ROOM

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Across
  1. 6. Country who supported Austria-Hungary after they declared war on Serbia
  2. 8. (blank) warfare where soldiers positions were protected by mines and barbed wire
  3. 9. Stronger country takes over weaker country politically and economically
  4. 11. Neither side can win!
  5. 12. Narrow, muddy land that separated German and Allied trenches
  6. 13. Group accused of killing Austria-Hungary's archduke
  7. 14. German submarine operated during World War One
  8. 16. Agreement to stop fighting at a certain time
  9. 17. Foot damage in war due to excess water exposure
Down
  1. 1. The second word in the MANIA acronym
  2. 2. The informal alliance between Britain, Russia, and France
  3. 3. Armored fighting vehicle intended as a primary offensive weapon
  4. 4. The alliance between Germany, Austria Hungary, and Italy
  5. 5. This person was assassinated by a Serbian nationalist group
  6. 7. Specific gas used in war for the first time
  7. 10. Country that Germany invaded in an attempt to capture Paris
  8. 15. The policy of building up a strong military to prepare for war