World War 1 Crossword Puzzle

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Across
  1. 2. Germany went through this country to get to France
  2. 4. Went from the English Channel down to Switzerland
  3. 5. He kept us out of war
  4. 6. Russia had more of this than Germany
  5. 9. Burned soldier's lungs
  6. 10. Austria-Hungary declared war on who first?
  7. 11. Kaiser of Germany
  8. 12. Germany's original plan of attack
  9. 15. Wilson's plan for peace
  10. 16. One of the Big Four (from France)
Down
  1. 1. Manfred Richthofen
  2. 3. Treaty that ended the war
  3. 7. Germany violated this and continued unrestricted sub warfare
  4. 8. Immediate cause of war
  5. 13. US entered war in
  6. 14. War was called this on the US home front