World War I

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Across
  1. 1. many million troops were deployed in total?
  2. 3. When did WWI start?
  3. 5. How many years did WWI last?
  4. 8. What was the main cause of the war?
Down
  1. 2. How much money was spent during WWI?(billion usd)
  2. 4. Who won WWI?
  3. 6. Where did WWI begin?
  4. 7. Who started the war?