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The Free Soil Party was 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.

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The Kansas–Nebraska Act of 1854 created the territories of Kansas and Nebraska and was drafted by Democratic Senator Stephen A. Douglas of Illinois and President Franklin Pierce.

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The south gained by the strengthening of the fugitive slave law, the north gained a new free state, California. Texas lost territory but was compensated with 10 million dollars to pay for its debt. Slave trade was prohibited in Washington DC, but slavery was not.

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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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The United States 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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John Caldwell Calhoun was 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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tariffs that are enacted with the aim of protecting a domestic industry.

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The Nullification Crisis was 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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an effort by Congress to defuse the sectional and political rivalries triggered by the request of Missouri late in 1819 for admission as a state in which slavery would be permitted