How did the Dred Scott Decisionsupport the doctrine of nullification and limit the ability of the federal government to restrict the expansion of slavery?

The political context surrounding slavery in the years leading up to the Dred Scott decision was one of compromise and sectional tensions

Explanation:

With the opening of Western territories, there was heightened debate between the North and South over the issue of slavery. Attempts to resolve the political tension included several compromises and acts. The Missouri Compromise of 1820 allowed Missouri to enter the Union as a slave state, yet it restricted slavery above the 36°30' line and west of Missouri. The Missouri Compromise was later partially invalidated with the Kansas-Nebraska Act of 1854, and territorial legislatures gained the power to determine whether to enter the Union as slave or free through a process of “popular sovereignty,” or letting the people decide.

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