On this episode of Our American Stories, in 1819, as the Missouri Crisis stirred national debate over slavery and westward expansion, a private conversation between John Quincy Adams and John C. Calhoun became something much larger. Calhoun defended slavery as a necessary institution. Adams left the conversation deeply shaken and newly committed to abolition. This moment would fuel his work after the presidency, where he became a leading voice against the Gag Rule and argued for the freedom of the Amistad captives.

Historians James Traub and Dr. Robert Elder share how a single exchange shaped one of the most important abolitionist legacies in American politics.

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