After months of bitter debate, Congress passes the Missouri Compromise, a bill that temporarily resolves the first serious political clash between slavery and antislavery interests in U.S. history.
Missouri CompromiseIn February 1819, Representative James Tallmadge of New York introduced a bill that would admit Missouri into the Union as a state where slavery was prohibited. At the time, there were 11 free states and 10 slave states. Southern congressmen feared that the entrance of Missouri as a free state would upset the balance of power between North and South, as the North far outdistanced the South in population, and thus, U.S. representatives. Opponents to the bill also questioned the congressional precedent of prohibiting the expansion of slavery into a territory where slave status was favored.
Even after Alabama was granted statehood in December 1819 with no prohibition on its practice of slavery, Congress remained deadlocked on the issue of Missouri. Finally, a compromise was reached. On March 3, 1820, Congress passed a bill granting Missouri statehood as a slave state under the condition that slavery was to be forever prohibited in the rest of the Louisiana Purchase north of the 36th parallel, which runs approximately along the southern border of Missouri. In addition, Maine, formerly part of Massachusetts, was admitted as a free state, thus preserving the balance between Northern and Southern senators.
The Missouri Compromise, although criticized by many on both sides of the slavery debate, succeeded in keeping the Union together for more than 30 years. In 1854, it was repealed by the Kansas-Nebraska Act, which dictated that slave or free status was to be decided by popular vote in the territories of Kansas and Nebraska; though both were north of the 36th parallel.
Pro‑ and Anti‑Slavery Factions in Congress When the Missouri Territory first applied for statehood in 1818, it was clear that many in the territory wanted to allow slavery in the new state. Part of the more than 800,000 square miles bought from France in the Louisiana Purchase of 1803, Missouri was known as the Louisiana […]
In 1854, Senator Stephen Douglas of Illinois proposed a bill to organize the Territory of Nebraska, a vast area of land that would become Kansas, Nebraska, Montana and the Dakotas. Known as the Kansas‑Nebraska Act, the controversial bill raised the possibility that slavery could be extended into territories where it had once been banned. Its […]
HISTORY.com works with a wide range of writers and editors to create accurate and informative content. All articles are regularly reviewed and updated by the HISTORY.com team. Articles with the “HISTORY.com Editors” byline have been written or edited by the HISTORY.com editors, including Amanda Onion, Missy Sullivan, Matt Mullen and Christian Zapata.
We strive for accuracy and fairness. But if you see something that doesn't look right, click here to contact us! HISTORY reviews and updates its content regularly to ensure it is complete and accurate.
