What event heightened sectional tensions between the North and the South,leading to increased militancy on both sides?

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The Missouri Compromise in 1820 was a significant event that heightened sectional tensions between the North and South. It involved legislation that admitted Missouri as a slave state and Maine as a free state, maintaining the balance of power between slave and free states in the Senate. It also prohibited slavery in the Louisiana Territory north of the 36° 30′ latitude line, except for Missouri. This compromise exposed the deep divisions over slavery and set the stage for increased militancy on both sides.

What Event Heightened Sectional Tensions Between the North and the South,leading