World War One Crossword Puzzle

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Across
  1. 2. The heir to the throne of Austria-Hungary who was assassinated
  2. 5. Led by France, Russia, and Britain during the war
  3. 7. The type of warfare using speed and surprise to attack the enemy's weaknesses
  4. 11. In 1907, France, Russia, and Great Britain signed this agreement
  5. 12. Led by Germany and Austria-Hungary during the war
Down
  1. 1. In 1882, Germany, Austria-Hungary, and Italy formed this agreement
  2. 3. Germany's plan to attack France first
  3. 4. A competition between nations for superiority in the development and accumulation of weapons
  4. 6. False or misleading information governments give in order to increase nationalism
  5. 8. The type of warfare gradually killing the enemy's soldiers and destroying their equipment
  6. 9. The number of years WWI lasted
  7. 10. A deep hole in the ground used for protecting soldiers