Important events

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Across
  1. 2. the first world war which was one of the deadliest
  2. 3. largest invasion force
  3. 4. the seconf world war which was a global conflict
  4. 6. the genocide of European Jews
  5. 7. a period of political and social revolution
Down
  1. 1. a period of economic depression
  2. 5. a revolution in Russia led by the Bolshevik Party of Vladimir Lenin