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the cotton gin revolutionized the production of cotton by greatly speeding up the process of removing seeds from the cotton fiber.http://www.history.com/topics/inventions/cotton-gin-and-eli-whitney
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tensions began to rise between anti-slavery and pro-slavery factions within the U.S. congress across the country. they reached a boiling point after Missouri's 1819 request for admission to the union as a slave state.http://www.history.com/topics/missouri-compromise
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the underground railroad helped escape slaves to there way to their freedom in the northern states or Canada. Harriet Tubman was a famous conductor and made nineteen to the south, and also helped three hundred slaves escape.http://www.history.com/topics/black-history/underground-railroad
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Wilmot proviso was designed to eliminate slavery within the land required as a result of the Mexican war.http://www.history.com/topics/wilmot-proviso
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it stated that laws admitting California as a free state, creating Utah and New Mexico territories with question about slavery in each to be determined popular sovereignty settling Texas-New Mexico boundary dispute in the former favor, to end a slave trade in Washington.
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Harriet Beecher Stowe wrote the book in reaction to recently tightened fugitive slave laws. it had a major influence on how the American public viewed slavery.http://www.history.com/this-day-in-history/uncle-toms-cabin-is-published
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during bleeding kanas there was murder, mayhem, destruction and psychological warfare became a code of conduct in eastern kanas and western Missouri. the massacre in may 1856 at Pottawatomie creek where John Brown and his sons killed five pro-slavery advocates.http://thomaslegion.net/bleedingkansas.html
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it allowed people in the kanas and Nebraska territories to decide themselves whether they are allowing slavery or not within their borders. the anti slavery settlers held another election and pro slavery settlers refused to vote. then that resulted in two opposing legislatures with the kanas territory. http://www.historyplace.com/lincoln/kansas.htm
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Dred's case affirmed slave owners the right to take their slaves into western territories by negating the doctrine of popular sovereignty severely undermining the platform of the newly republican partyhttp://www.history.com/this-day-in-history/dred-scott-decision.
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both Lincoln and Douglas the issues they discussed were not only of critical importance to the sectional conflict over slavery and states rights also touched deeper questions that would continue to influence political discourse. Lincoln said the issues would be discussed long after '' these poor tongues of judge Douglas and myself shall be silent.''http://www.history.com/topics/lincoln-douglas-debates
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john lead a small group on a raid against federal armory in harpers ferry in Virginia, in an attempt to start an armed slave revolt and destroy the institution of slavery. on may 25 brown and his sons attacked three cabins at Pottawatomie Creek.http://www.history.com/this-day-in-history/john-browns-raid-on-harpers-ferry
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it was electoral split between northern and southern democrats was emblematic of the severe sectional split. particularly slavery, and in the months following Lincoln's election and before his inauguration in march 1861.https://www.britannica.com/event/United-States-presidential-election-of-1860
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the fort had been the source of tension between the union and confederacy for several months. after south Carolina seceded on December 20,1860, the state demanded the fort be turned over but the union officials refused. http://www.history.com/this-day-in-history/fort-sumter-fired-upon
