Preston's cross puzzle

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Across
  1. 5. to gain control and gain power in countries or grow an empire
  2. 7. groups of people of armies that fight for their country
  3. 9. countries that agree to help each other if they were attacked
  4. 10. one of the central powers
  5. 11. itself or show strength
Down
  1. 1. the belief that a country has strong military power to be prepared to use
  2. 2. one of the allied powers
  3. 3. one of the allied powers
  4. 4. purposely killing a person
  5. 6. one of the central powers
  6. 8. one of allied countries