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A duty imposed on imports to raise their price, making them less attractive to consumers and thus protecting domestic industries from foreign competition.

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a person who favors formal withdrawal from membership of a federation or body, especially a political state.

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a group formed in the United States in the 1860s. The group was formed after the Election of 1860.

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were white people living in the Confederate States of America, opposed to secession, and against the Civil War.

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The Declaration of the Immediate Causes Which Induce and Justify the Secession of South Carolina from the Federal Union was a proclamation issued on December 24, 1860, by the government of South Carolina to explain its reasons for seceding from the United States

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United States presidential election of 1860. United States presidential election of 1860, American presidential election held on Nov. 6, 1860, in which Republican Abraham Lincoln defeated Southern Democrat John C. Breckinridge, Democrat Stephen A. Douglas, and Constitutional Union candidate John Bell

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John Brown's raid on Harper's Ferry was an effort by armed abolitionist John Brown to initiate an armed slave revolt in 1859 by taking over a United States arsenal at Harpers Ferry, Virginia

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John Brown was an American abolitionist who believed in and advocated armed insurrection as the only way to overthrow the institution of slavery in the United States

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Abraham Lincoln was an American statesman and lawyer who served as the 16th President of the United States from March 1861 until his assassination in April 1865

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legal case in which the U.S. Supreme Court on March 6, 1857, ruled (7–2) that a slave (Dred Scott) who had resided in a free state and territory (where slavery was prohibited) was not thereby entitled to his freedom; that African Americans were not and could never be citizens of the United States

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a short-lived political party in the United States active in the 1848 and 1852 presidential elections as well as in some state elections

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Bleeding Kansas, Bloody Kansas or the Border War was a series of violent political confrontations in the United States between 1854 and 1861 involving anti-slavery "Free-Staters" and pro-slavery "Border Ruffian", or "southern" elements in Kansas

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The Fugitive Slave Law or Fugitive Slave Act was passed by the United States Congress on September 18, 1850, as part of the Compromise of 1850 between Southern slave-holding interests and Northern Free-Soilers. ... Abolitionists nicknamed it the "Blood hound Law" for the dogs that were used to track down runaway slaves.

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Kansas-Nebraska Act was passed by the U.S. Congress on May 30, 1854. It allowed people in the territories of Kansas and Nebraska to decide for themselves whether or not to allow slavery within their borders. The Act served to repeal the Missouri Compromise of 1820 which prohibited slavery north of latitude 36°30´.

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Senator Henry Clay introduced a series of resolutions on January 29, 1850, in an attempt to seek a compromise and avert a crisis between North and South. As part of the Compromise of 1850, the Fugitive Slave Act was amended and the slave trade in Washington, D.C., was abolished.

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The Mexican–American War, also known as the Mexican War and in Mexico the American intervention in Mexico, was an armed conflict between the United States of America and the United Mexican States from 1846 to 1848

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Andrew Jackson was an American soldier and statesman who served as the seventh President of the United States from 1829 to 1837

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Force Bill, formally titled "An Act further to provide for the collection of duties on imports", 4 Stat. 632 (1833), refers to legislation enacted by the 22nd U.S. Congress on March 2, 1833, during the Nullification Crisis.

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an American statesman and political theorist from South Carolina, and the seventh Vice President of the United States from 1825 to 1832

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a United States sectional political crisis in 1832-33, during the presidency of Andrew Jackson, which involved a confrontation between South Carolina and the federal government

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A settlement of a dispute between slave and free states, contained in several laws passed during 1820 and 1821. Northern legislators had tried to prohibit slavery in Missouri, which was then applying for statehood