World War I

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Across
  1. 6. having more soldiers and more weapons
  2. 10. an agreement to stop fighting
  3. 11. loving your country too much and thinking it is better than all others
  4. 13. to make something go under water
  5. 15. Includes countries like Egypt, Iran and Iraq
  6. 16. going into other countries and fighting for control of the land and people
  7. 18. tunnel dug into the ground for fighting
  8. 19. something that will kill you if you breathe it in
Down
  1. 1. the reason for something happening
  2. 2. the son of a king
  3. 3. person in control of a country
  4. 4. large military vehicle
  5. 5. to go into another country without permission
  6. 7. not wanting to fight
  7. 8. country
  8. 9. planes, poison gas, machine guns, trenches, etc
  9. 12. boat that can go under water
  10. 14. agreeing to be friends with, and to help, other countries
  11. 17. to say that you are going to fight another country