By Ryan O’Sullivan    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. I think that it evolved the United States because it establishing a boundary between free and slave regions that remained the law of the land until it was negated by the Kansas-Nebraska Act of 1854, it also granting Missouri’s request but also admitting Maine as a free state and it, and it also passed an amendment that drew an imaginary line across the former Louisiana Territory.    The Missouri Compromise evolved the United States by granting Missouri’s request as part of the Missouri Compromise Maine was admitted into the Union as the 23rd state. In many ways, this helped evolved the United States. One way it evolved the United States is because it made both slave and free states have equal votes in Congress. Which means that no one side has more power in Congress.    The Missouri Compromise also evolved the United States by establishing free and slave regions It evolved the United States because it made the north and south state split so that not one side had more states and both sides have equal say and a balance in Congress. Also, slavery was to be excluded from the Louisiana Purchase lands north of latitude 36°30′ so that neither side would be lesser in Congress.    Also, the Missouri Compromise evolved the United States by passing an amendment that drew an imaginary line across the former Louisiana Territory. It did this by having slavery excluded from the Louisiana Purchase lands north of latitude 36°30′ so that neither side would be lesser in Congress. This means that both north and south states will have the same amount a land, so it won’t lead to any wars or arguments in court.    That is why I think that the Missouri Compromise helped evolve the United States because it established a boundary between free and slave regions that remained the law of the land until it was negated by the Kansas-Nebraska Act of 1854, it also granted Missouri’s request as part of the Missouri Compromise Maine was admitted into the Union as the 23th state, and it also passed an amendment that drew an imaginary line across the former Louisiana Territory.http://www.history.com/this-day-in-history/maine-enters-the-unionhttps://www.loc.gov/rr/program/bib/ourdocs/Missouri.html