Who was Albert Einstein?

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Across
  1. 3. The theory Einstein is most famous for
  2. 6. Religion Einstein practiced
  3. 7. Einstein's birth country
  4. 9. Instrument Einstein played
  5. 10. Einstein's second wife
Down
  1. 1. Number of countries Einstein lived in
  2. 2. Einstein's first wife
  3. 4. Age Einstein began speaking
  4. 5. The science Einstein studied
  5. 8. City Einstein was born in