World War 1

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Across
  1. 4. when your government forces you into the military
  2. 6. an agreement to stop fighting
  3. 7. an agreement to defend another country
  4. 9. not choosing a side
  5. 10. a large vehicle with tracks to cross trenches
  6. 11. building up of one's military
Down
  1. 1. a period of many new inventions
  2. 2. a warship that travels underwater
  3. 3. a long, deep ditch where armies fought from
  4. 5. a formal written agreement between countries
  5. 8. when a stronger country takes over a weaker country
  6. 9. a belief that your country is better than others