What was NOT an effect of the Missouri Compromise? A. Missouri becomes a slave state B. no state above the Missouri Compromise line will be a slave state C. Allowed slavery to spread in the North D. Maine becomes a free state

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Answer:

A

Explanation: In 1854, the Missouri Compromise was repealed by the Kansas-Nebraska Act. Three years later the Missouri Compromise was declared unconstitutional by the Supreme Court in the Dred Scott decision, which ruled that Congress did not have the authority to prohibit slavery in the territories.