Its History

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Across
  1. 4. That's one small step for man, one giant leap for mankind
  2. 5. holiday in the United States where fireworks are aplenty
  3. 6. Sank after colliding into an iceberg
  4. 7. We purchased Louisiana from them in 1803
Down
  1. 1. Ended in 1945 after the surrender of the axis powers
  2. 2. Started after Archduke Franz Ferdinands assassination
  3. 3. Was established to prevent future global conflicts