1. Sectionalism in the United States was the undue devotion to regional interests over those of the United States, severely dividing it into the Pro-slavery South and Anti-slavery North.
2. The big issue in the United States as a result of the westward expansion was <u>Slavery</u> in the Western Territories.
3. The Missouri Compromise remained a temporary solution to the issue of slavery in 1820 as the nation later engaged in a divisive and devastating Civil War largely centered on the issue of slavery.
<h3>How did slavery divide the United States?</h3>
The Southern economy relied on enslaved labor for the cultivation of its large plantations of cotton, tobacco, and other crops.
The North used enslaved labor for mostly domestic activities since the economy did not require labor-intensiveness. It later outlawed the spread of slavery.
Thus, sectionalism in the United States divided the nation into the Pro-slavery South and Anti-slavery North.
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