WWI

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Across
  1. 3. The term for the practice of using toxic gases as weapons
  2. 6. The British passenger ship attacked by a German submarine in 1915
  3. 7. The treaty that ended World War I
  4. 8. The U.S. President during World War I
  5. 9. The primary battlefield on the Western Front
Down
  1. 1. The assassination of this archduke sparked the beginning of World War I
  2. 2. The period of intense artillery bombardment before an attack
  3. 4. The alliance consisting of Germany, Austria-Hungary, and Italy
  4. 5. The ocean liner sunk by a German U-boat, leading to U.S. entry into the war
  5. 6. The British commander who led the Arab revolt against the Ottoman Empire