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http://www.history.com/topics/inventions/cotton-gin-and-eli-whitneythe cotton gin was invinted by Eli Whitney. He invinted it as a means of getting seeds out of cotton easier. The cotton gin is also known as the thing that helped rebirth slavery
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https://en.wikipedia.org/wiki/Underground_RailroadThe Underground Railroad was a network of secret routes and safe houses used by 19th-century enslaved people of African descent in the United States in efforts to escape to free states and Canada with the aid of abolitionists and allies who were sympathetic to their cause.
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http://www.britannica.com/event/Missouri-CompromiseFinally, a compromise was reached. On March 3, 1820, Congress passed a bill granting Missouri statehood as a slave state under the condition that slavery was to be forever prohibited in the rest of the Louisiana Purchase north of the 36th parallel, which runs approximately along the southern border of Missouri.
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http://historymatters.gmu.edu/d/6811/another name for this was the southampton insurrection. this consisted of Nat Turner and over 70 enslaved and free blacks. Nat and his colliges were killed.
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http://www.accessible-archives.com/collections/the-liThe Liberator was an abolitionist newspaper founded by William Lloyd Garrison and Isaac Knapp in 1831.
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http://www.history.com/topics/wilmot-provisodesined to eliminate slavery. the land from the mMexican war was used . the presednt at the time was James K. Polk
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https://www.loc.gov/rr/program/bib/ourdocs/Compromise1850.htmlThe Compromise of 1850 was a package of five separate bills passed by the United States Congress in September 1850, which defused a four-year political confrontation between slave and free states regarding the status of territories acquired during the Mexican-American War (1846–1848).
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https://en.wikipedia.org/wiki/Uncle_Tom%27s_Cabin
it is an anti-slavery novel by American author Harriet Beecher Stowe. it lays the groundwork for the civil war. -
https://www.google.com/webhp?hl=en#safe=strict&hl=en&q=bleeding+kansasBleeding Kansas, Bloody Kansas or the Border War was a series of violent political confrontations in the United States involving anti-slavery Free-Staters and pro-slavery "Border Ruffian" elements, that took place in the Kansas Territory and the neighboring towns of the state of Missouri between 1854 and 1861
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https://www.google.com/webhp?hl=en#safe=strict&hl=en&q=kansas+nebraska+actThe Kansas–Nebraska Act of 1854 (10 Stat. 277) created the territories of Kansas and Nebraska, opening new lands for settlement, and had the effect of repealing the Missouri Compromise of 1820 by allowing white male settlers in those territories to determine through popular sovereignty whether they would allow slavery ..
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http://www.ushistory.org/us/31e.aspMassachusetts was an avowed Abolitionist and leader of the Republican Party. After the sack of Lawrence, on May 21, 1856, he gave a bitter speech in the Senate called "THE CRIME AGAINST KANSAS." He blasted the "murderous robbers from Missouri," calling them "hirelings, picked from the drunken spew and vomit of an uneasy civilization.
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https://en.wikipedia.org/wiki/Dred_Scott_v._SandfordDred Scott v. Sandford, 60 U.S. 393 (1857), was a landmark decision by the U.S. Supreme Court in which the Court held that African Americans, whether enslaved or free, could not be American citizens and therefore had no standing to sue in federal court,[2][3] and that the federal government had no power to regulate slavery in the federal territories acquired after the creation of the United States. Dred Scott, an enslaved African American man who had been taken by his owners to free states and t
