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The Missouri Compromise was a U.S. law passed in 1820 that temporarily settled the dispute over the expansion of slavery by admitting Missouri as a slave state and Maine as a free state
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United States presidential election of 1824, American presidential election held in 1824, in which John Quincy Adams was elected by the House of Representatives after Andrew Jackson won the most popular and electoral votes but failed to receive a majority. Andrew Jackson referred to this as a "Corrupt Bargain."
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The "Tariff of Abominations," passed by Congress in 1828, raised duties on imports to protect northern and western industries. The South opposed it, viewing it as a burden that harmed its agricultural economy by increasing the cost of imports and complicating cotton exports.
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The Compromise of 1850 was a series of five laws passed to defuse tensions between slave and free states, admitting California as a free state, creating the territories of Utah and New Mexico with popular sovereignty to decide the slavery issue, and abolishing the slave trade in Washington, D.C..
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Bleeding Kansas was a series of violent civil confrontations, led by abolitionist John Brown, in the Kansas Territory, and to a lesser extent in western Missouri, between 1854 and 1859. It emerged from a political and ideological debate over the legality of slavery in the proposed state of Kansas.
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John Brown's raid on Harpers Ferry in October 1859 aimed to incite a slave uprising by seizing a federal armory in Virginia. The raid failed when local militia and U.S. Marines, led by Robert E. Lee, captured Brown and his followers. Brown was hanged for treason, and the event deepened the divide between the North and South, resulting in another step towards starting the Civil War.