What was the main purpose of the missouri compromise? a.) to give the south more power in the national congress. b.) to make missouri a slave state. c.) to prevent slavery from expanding in other parts of the united states. d.) to maintain a balance of free and slave states.

the correct answer is D

Explanation:

The purpose of the Missouri Compromise was to keep a balance between the number of slave states and the number of free states in the Union. It allowed Missouri to enter as a slave state at the same time Maine entered as a free state, thus maintaining a balance in numbers of free and slave states.

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