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In the 1850’s, slave owners wanted to introduce slavery to their territories gained from theat with Mexico. Congress debated whether to introduce slavery in the territories. But by 1857, The Supreme Court ruled that they cannot prevent slave owners from introducing slavery into the territories because they are not citizens of the United State.

http://edu.lva.virginia.gov/online_classroom/union_or_secession/unit/3/slavery_in_the_territories

http://travelsouth.us/who-proposed-a-law-prohibiting-slavery-in-the-territories/

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Just weeks after the new president was elected, there was talk of the south seceding from the north. The senate committee searched for compromises to keep states in the south happy, but Abraham Lincoln would not present a compromise. This prompted South Carolina delegates to vote and leave the Union. Soon after South Carolina left the Union six other states left, And the Union dissolved.

https://www.history.com/topics/american-civil-war/secession

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#14 Abraham Lincoln is Elected as President 

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#14 Abraham Lincoln is Elected as President 

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Abraham had a weird victory when he won presidency because he had 40% of the votes and ten for states wasn't even listed on the ballot. When Abraham Lincoln won presidency, the southerners feared this meant the end of slavey which meant the loss of property and homes.

https://www.veteranstoday.com/2017/11/06/1860-on-this-day-in-history-abraham-lincoln-elected-16th-president-of-usa/

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John Brown was an abolitionist who took extreme measures to end slavery. John Brown planned on seizing the arsenal at Harpers Ferry to arm the slaves and lead them into a rebellion. All of John's slaves were killed in the attempt. As for John Brown, he was sentenced to die for treason. John left a note when he died, which made the southerners fear that when the slaves do rebel, the only bloodshed will be the blood of the southerners. To some in the North, John died a hero.

https://www.civilwar.org/learn/collections/john-browns-harpers-ferry-raid

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Lincoln and Douglas were opponents in the election for Illinois' State Senator . Lincoln and Douglas debated over the slavery issue that Douglas thought was over and Lincoln disagreed. He thought slavery was a moral, not a legal issue. Lincoln did not win the title of State Senate.

http://www.american-historama.org/1860-1865-civil-war-era/lincoln-douglas-debates.htm

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A slave named Dred Scott went to Missouri (a free state) with his master. When he returned, he sued for his freedom because his stay made him a free man. The court rejected his argument because they ruled that the Missouri Compromise was unconstitutional.

https://www.loc.gov/rr/program/bib/ourdocs/DredScott.html

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In 1856, Senator Charles Sumner gave a speech regarding his suspicions about how Senator Stephan Douglas had planned with the south to make Kansas a slave state. Word spread like wildfire and South Carolina's Representative Preston Brooks physically attacked Charles Sumner until he was bloody and unconscious.

http://slideplayer.com/slide/8439337/

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After the Kansas-Nebraska Act of 1854, pro-slavery and anti-slavery settlers moved to Kansas to try to influence the popular vote. But then, things got violent and both sides fought for control.
https://www.thoughtco.com/the-kansas-nebraska-act-of-1854-1773981

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The Kansa-Nebraska Act of 1854 allowed settlers of the territory the choice of whether slavery was allowed in the territory or not.
https://www.history.com/topics/kansas-nebraska-act

https://sites.google.com/a/oceanschools.org/the-railroad-express/home/kansas-nebraska-act

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Fugitive Slaves were people who ran away from their masters before and during the American Civil War.
https://www.britannica.com/topic/fugitive-slave

http://www.thefacultylounge.org/2018/02/fugitive-slaves-as-constitutional-

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The Compromise of 1850 included multiple compromises. One was admitting California in as a free state. Another was creating Utah and New Mexico territories with the future of slavery to be decided by the population. Congress also settled a boundary dispute for Texas and New Mexico. They also ended slave trade in Washington, D.C. and made it easier for southerners to recover run away slaves.
https://www.history.com/topics/compromise-of-1850

http://sectionalismtosecession.weebly.com/compromise-of-1850.html

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On September 9,1850 - two years after the Treaty of Guadalupe Hidalgo - California was made the 31st state.
https://www.history.com/this-day-in-history/california-becomes-the-31st-state-in-record-time

https://www.mysticstamp.com/pictures/stamps_default/USA-997.jpg

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The Fugitive Slave Act required people to return escaped slaves.Congress passed this act in 1793. However, people were helping the slaves escape which lead to the second Fugitive Slave Act of 1850. This Act created harsher punishments for those who helped the fugitive slaves.
https://www.history.com/topics/black-history/fugitive-slave-acts

http://apushpacia.blogspot.com/2011/11/fugitive-slave-law-1850.html

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In 1820, Maine was looking to enter the Union as a free state, but congress ran into conflicts when Missouri wanted to enter the Union. Thus, Congress came up with a compromise and entered Missouri as a slave state and Maine as a free state

http://www.compromise-of-1850.org/wp-content/uploads/2013/07/Missouri-Compromise-1820-map.jpg

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During the 1830s, abolitionists continually presented Congress with anti slavery petitions. Congress, instead of confronting this problem, they tabled it. This angered abolitionists. Congress called this the Gag Rule, which new member John Quincy Adams proposed. Adams also proposed a constitutional amendment, saying no one could be born into slavery after 1845.

http://3.bp.blogspot.com/_FCRFPn2IKPU/TG4GhGDuj3I/AAAAAAAACRw/vYRX62euR2w/s1600/JQA.jpg