Explain why the missouri compromise increased sectionalism

North of it, encompassing what in 1820 was still “unorganized territory,” there would be no slavery. The Missouri Compromise marked a major turning point in America's sectional crisis because it exposed to the public just how divisive the slavery issue had grown.

Explanation:

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answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;