WW1 and its facts

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Across
  1. 3. The country that was invaded by Germany to access France.
  2. 5. The title given to the king in The Russian Empire.
  3. 6. A type of murder that started World War One.
  4. 7. A tunnel dug into the ground for protection.
  5. 8. The creator of the famous German plan for war.
  6. 9. The leader of Germany during World War One.
Down
  1. 1. A country's main motive to war
  2. 2. People from the Balkan States.
  3. 4. Where the first and second crisis happened.
  4. 6. Countries teaming with each other.