How did the missouri compromise change the political map of and balance of power in the us?

The Missouri Compromise led to growing sectionalism because the South felt like the north had adopted an aggressive stance against slavery. The resulting resentment led to a Civil War breaking earlier than it could have due to the admission of Missouri as a slave state

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i believe that the correct answer is a canadian hero.

explanation: he is celebrated as a national hero in canada for successfully thwarting a united states takeover of canada during the war of 1812.