World War I

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Across
  1. 7. Woodrow Wilsons plan that sadly failed.
  2. 8. the alliance between Germany and Austria-Hungary.
  3. 9. the alliance between Great Britian, France, Russia, Japan and Italy.
  4. 11. one of the main causes of WWI.
Down
  1. 1. where WWI mostly took place (continent).
  2. 2. country involved in WWI but had to leave in 1917 due to own revolution.
  3. 3. treaty that brought WWI to an end.
  4. 4. the invisible weapon of WWI.
  5. 5. mobile weapon used during WWI.
  6. 6. who assasinated Archduke Franz Ferdinand?
  7. 10. ship sunk by German Submarine off the coast of Ireland.