World War I

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Across
  1. 3. continent where most of the fighting of WWI took place
  2. 7. Archduke who was assassinated, sparking World War I
  3. 11. dug out tunnels where soldiers live and fight from, on either side of no man´s land
  4. 12. agreements to defend another country
  5. 13. large gas filled balloons used by Germany
  6. 14. German submarines that attacked merchant ships
  7. 15. deadlock where neither side makes gaines
  8. 16. passenger ship that sunk with 128 Americans on it
  9. 17. area in the middle of enemy trenches (Three words)
Down
  1. 1. large calibur guns that could bomb cities from miles away
  2. 2. the war that took place from 1914-1918 (3words)
  3. 4. bulky big pieces of war equipment used to cross no man´s land, broke down often
  4. 5. groups of merchant ships surrounded by other ships for protection
  5. 6. building up military, getting ready for war
  6. 8. weapon used to blind or burn enemy, on a windy day, could blow back at you (two words)
  7. 9. building a strong empire with colonies
  8. 10. having pride in your country