Crossword about the pople from the 20. century

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Across
  1. 5. The leader of the nazis during the world war
  2. 8. Iconic American actress and cultural symbol of the 1950s.
  3. 9. The famous leader of the soviet union
  4. 10. A famous basketball player
Down
  1. 1. British Prime Minister during World War II.
  2. 2. A Brittish singer, whose persona is ziggie stardust
  3. 3. The best boxer of the history
  4. 4. Nirvanas lead singer.
  5. 6. Leader of the Bolshevik Revolution in Russia.
  6. 7. Renowned physicist known for the theory of relativity.