Famous persons

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Across
  1. 2. He started the second world war in Europe.
  2. 3. He's a superhero.
  3. 7. US president.
  4. 8. The first man on the moon.
  5. 9. He's a youtuber.
  6. 10. The founder of differential calculus.
Down
  1. 1. His first name is Justin.
  2. 4. He's a Hobbit.
  3. 5. An old man, with a staff.
  4. 6. He loves weed.