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(http://www.history.com/topics/inventions/cotton-gin-and-eli-whitney)The invention of the cotton gin was the start of a easier way to clean cotton but south people didnt like it as much because it made it easier for the slaves which was a bad thing for them the inventor eli whitney, by the mid 19th century cotton had become americas leading export despite the success and the copy cats he ended up with court debt and battles from the copy cats.
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http://www.history.com/topics/missouri-compromiseThe missouri compromise prohibited slavery this happened in 1820 they wanted to have a slave state but the north was already a free slave country on march 3 1820 congress passed a bill granting missouri statehood as a slave state.
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(http://www.accessible-archives.com/collections/the-liberator/) in January 1,1831 was an abolitionist newspaper founded by William Lloyd garrison he was aginst slavery he formed an anti slavery group.
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(http://www.history.com/topics/wilmot-proviso) Was designed to eliminate slavery within the land acquired as a result to the Mexican war, (1846-48)....
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http://www.historynet.com/underground-railroad it started in 1810 till 1850 which was the start of the civil war the underground railroad was a network of tunnels underground to escape the bad conditions they were kept in the south and also to go to the north because their were free states in the north and harriet tubman was a major leader in the underground railroad https://www.youtube.com/watch?v=uQ85z9vggYM
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divisions over slavery in territories gained in the mexican american which was resolved in (1846-48) war was to come it consisted of laws admitting california as a free state. -
(http://www.history.com/this-day-in-history/uncle-toms-cabin-is-published)Was an anti-slavery novel.The novel sold 300,000 copies within three months...Helped lay The groundwork for the civil war....
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(http://www.ushistory.org/us/31a.asp)kansas nebraska act was passed in may 30 1854 it let them decide to allow slavery or not within their borders this act served to repeal the missouri compromise but kansas with slavery would violate the missouri compromise.
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(http://www.history.com/topics/bleeding-kansas) In 1854 the bleeding Kansas was a term used to describe the period of violence during the settlement of the Kansas territory.
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click here march 6,1857 the most important question should slavery be allowed in the west as part of the compromise of 1850 residents created territories they issued slavery by vote when they banned slavery violence erupted.
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click hereLincoln during the 1858 was the illinois state election campaign the issues they discussed were not only critical important but conflict over slavery and rights were important.
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(http://www.ushistory.org/us/32d.asp) united states presidential election of 1860 in which republican abraham lincoln defeated the southern democrat john breckinridge.
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After the civil war began,Four slave states Virginia,Arkansas,,North Carolina, etc Of the upper south their secession and joined the confederacy.....