What did the missouri compromise of 1820 accomplish?
it allowed missouri to enter the union as a free state.
it allowed maine to enter the union as a slave state.
it created a dividing line between free and slave states.
it created the fugitive slave law.

It created a dividing line between free and slave states.

Explanation:

The Missouri Compromise was an effort by Congress to defuse the sectional and political rivalries triggered by the request of Missouri late in 1819 for admission as a state in which slavery would be permitted. At the time, the United States contained twenty-two states, evenly divided between slave and free.

The Missouri Compromise, although criticized by many on both sides of the slavery debate, succeeded in keeping the Union together for more than 30 years.

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