Resulting from the Missouri was a division of territory west of that state being divided north and south between possible slave and free states. Also, to keep a balance of slave and free states in Congress, Maine was admitted as a free state at the same time Missouri became a slave state.
That would be 4 Between 1820 and 1850, eight states were added to the Union: Maine (1820), Missouri (1821), Arkansas (1836), Michigan (1837), Florida (1845), Texas (1845), Iowa (1846), and Wisconsin (1848). Maine, Michigan, Iowa, and Wisconsin were free states, while Missouri, Arkansas, Florida, and Texas were slave states. This maintained the balance between free and slave states.
If you date it from the Missouri Compromise (1820), the answer is forty-one years.
The Missouri Compromise was an effort by Congress to allow the state to enter as a slave state. At the time there was 22 states and they were evenly divided between slave and free. Admission of Missouri as a slave state would upset the balance of power and set a movement towards the expansion of slavery. This debate ran from December 1819 to March 1820 until the compromise was worked out. The compromise stated that Missouri would come in slave while Maine would come in free and except for Missouri slavery would be excluded from the Louisiana Purchase lands north of latitude 36 30'. This plan was criticized by many southerners because it would establish a principle that Congress could make laws regarding slavery and the north felt it gave into slavery. Yet, this help hold the union together for more than 30 years until it was repealed by the Kansas Nebraska Act of 1854. Three years later in the Dred Scot case the Supreme Court found the Missouri Compromise unconstitutional on the grounds that Congress was prohibited by the Fifth Amendment from depriving individuals of private property without due process of law. I think it worked for a time and conditions made it so it couldn't work.
There was not a major decision that led to it but there were many that led to it such as the dred Scott decision and the Missouri compromise and the compromise of 1850 and the Lincoln- Douglas debate
There were 12 slave states after the Missouri Compromise.
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In America there was 11 free states and 11 slave states, before the compromise.
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Two states were allowed into the Union, Missouri as a slave state and Maine as a free state. http://www.loc.gov/rr/program/bib/ourdocs/Missouri.html
The Missouri Compromise set kind of a boundary between slave states and free states. The states South of the Missouri border were labeled as "slave" states and those north were labeled "free" states.
18 states were free states, 15 states were slave states 33 states overall
The Missouri compromise was one of the many ways the boundaries of America grew. The compromise admitted Missouri as a state and also brought the question of slavery to the forefront of many minds.
Political parties avoided the issue of slavery for many years after the Missouri compromise.
Political parties avoided the issue of slavery for many years after the Missouri compromise.
Stephen Douglas was eager to develop west of his home from Illionois. As a result, he suggested to form two new territories : Kansas and Nebraska. However, many Southerners rejected the idea because under the Missouri Compromise, the territories would be admitted as free states. Douglas then proposed that the upcoming territories would be decided by popular sovereignty, earning the South's favor and thus, removing the Missouri Compromise.