Dred Scott v. Sandford · US History

On what primary legal basis did Dred Scott argue for his freedom before the Supreme Court?

  1. His master had formally promised him manumission in a written will
  2. He had been born in a free state to two enslaved parents
  3. His long residence in a free state and territory made him free
  4. The Northwest Ordinance of 1787 automatically freed all slaves
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Correct answer: His long residence in a free state and territory made him free

Dred Scott’s legal team argued that because he had lived in Illinois (a free state) and the Wisconsin Territory (a free territory), his status had legally shifted from enslaved to free. This was based on the doctrine of 'once free, always free' that had been recognized in earlier Missouri court cases.

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