The Missouri Compromise was an agreement passed in 1820 between the pro-slavery and anti-slavery factions in the United States Congress, involving primarily the regulation of slavery in the western territories. It prohibited slavery in the former Louisiana Territory north of the parallel 3630 north except within the boundaries of the proposed state of Missouri. Prior to the agreement, the House of Representatives had refused to accept this compromise, and a conference committee was appointed. A bill to enable the people of the Missouri Territory to draft a constitution and form a government preliminary to admission into the Union came before the House of Representatives in Committee of the Whole, on February 13, 1819. James Tallmadge of New York offered an amendment (named the Tallmadge Amendment), that forbade further introduction of slaves into Missouri, and mandated that all children of slave parents born in the state after its admission should be free at the age of 25.
Contributions by Bkonrad, Shanes, and 18.104.22.168.