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What musher and his dog relayed diphtheria vaccine via the Iditarod Trail to fight an epidemic in Nome in 1925 and became national heroes?

  1. Robert Service and White Fang
  2. John Muir and Rin Tin Tin
  3. Chilkoot Bill and Wolf II
  4. Leonhard Seppala and Balto

Answer

The correct answer is D) Leonhard Seppala and Balto.

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