Since the outbreak of the Civil War and continuing to the present day, the role of slavery in splitting America has been hotly debated. One may wonder whether there was merely a correlation between slavery and the Civil War or whether slavery was the cause. Investigating the nuances of the issue of slavery reveals that the Civil War resulted from sectionalism and slavery, which were practically synonymous.
John Calhoun and his like-minded supporters hoped that nullification would become a legitimate alternative to secession for the South. Nullification was the doctrine that Calhoun believed meant that states could nullify a federal law, on the basis that states had their own sovereignty and the federal government could not infringe on that sovereignty. See Daniel Walker Howe, What Hath God Wrought: Transformation of America, 1815-1848, 402. This approach was designed to primarily perpetuate the institution of slavery, without the conflict culminating in secession, or worse, civil war.
Paul Cuffe, by 1816, began making voyages across the Atlantic Ocean to Africa, transporting African-Americans who wished to make a new home in Africa. Daniel Walker Howe, What Hath God Wrought: Transformation of America, 1815-1848, 260.
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