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happened on march 3 1820. Held for 34 years, until it was repealed by Kansas-Nebraska Act of 1854. along Missouri southern border.   important people are President James Monroe and Henry Clay. a law that tried to address growing sectional tensions over the issue of slavery.

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in Charleston, South Carolina in 1822 Denmark Vesey was a carpenter and formerly enslaved person. Because he was dissatisfied with his second-class status as a freedman and determined to help relieve the far more oppressive conditions of bondsmen he knew. He was making plans to get slaves out and get help.

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in U.S. history, confrontation between the state of South Carolina and the federal government in 1832–33 over the former's attempt to declare null and void within the state the federal Tariffs of 1828 and 1832

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was an enslaved man who led a rebellion of enslaved people on August 21, 1831. His action set off a massacre of up to 200 Black people and a new wave of oppressive legislation prohibiting the education, movement, and assembly of enslaved people.

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war fought from October 1835 to April 1836 between Mexico and Texas colonists that resulted in Texas's independence from Mexico and the founding of the Republic of Texas. The refusal of many Texas, both Anglo and Mexican, to accept the governmental changes mandated by Siete Leyes

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The Mexican American War is a disputed boundary between the United States and Texas on the Nueces Strip. They fought over the boarder from April 25, 1846 – February 2, 1848. some important people are Winfield Scott,Stephen W. Kearny John C. Frémont  the war was in Matamoros, Mexico. The USA won.

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The Wilmot Proviso was an unsuccessful 1846 proposal in the United States Congress to ban slavery in territory acquired from Mexico in the Mexican–American War. The conflict over the Wilmot Proviso was one of the major events leading to the American Civil War.

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Passed on September 18, 1850 by Congress, The Fugitive Slave Act of 1850 was part of the Compromise of 1850. The act required that slaves be returned to their owners, even if they were in a free state.

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The abolitionist movement was an organized effort to end the practice of slavery in the United States. The first leaders of the campaign, which took place from about 1830 to 1870 they used tactics British abolitionists had used to end slavery in Great Britain in the 1830s

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a declaration in 1854 issued from Ostend, Belgium, by the U.S. ministers to England, France, and Spain, stating that the U.S. would be justified in seizing Cuba if Spain did not sell it to the U.S.

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Kansas entered the Union as a free state on January 29 1861. This era became forever known as Bleeding Kansas. This took place in Kansas. an important person to this act is John Brown.

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upheld slavery in United States territories, denied the legality of black citizenship in America, and declared the Missouri Compromise to be unconstitutional.Missouri's Dred Scott Case was from 1846 to 1857. Chief Justice Roger Taney started the case.

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On the evening of October 16, 1859 John Brown, a staunch abolitionist, and a group of his supporters left their farmhouse hide-out en route to Harpers Ferry. Descending upon the town in the early hours of October 17th, Brown and his men captured prominent citizens and seized the federal armory and arsenal.

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In a four-way contest, the Republican Party ticket of Abraham Lincoln and Hannibal Hamlin, absent from the ballot in ten slave states, won a national popular plurality, a popular majority in the North where states already had abolished slavery, and a national electoral majority comprising only Northern electoral votes.