Kansas-Nebraska Act Nullifies Missouri Compromise

The Kansas-Nebraska Act nullified the policy set by the Missouri Compromise by permitting the Kansas and Nebraska Territories to vote on whether they would join the Union as free or slave states. This sparked a de facto war between pro-slavery Missourians and anti-slavery Free-Staters of Kansas.

When this happened

Kansas-Nebraska Act Nullifies Missouri Compromise occurred in 1854, during the antebellum period of American history.

Where this happened

Kansas-Nebraska Act Nullifies Missouri Compromise took place in Missouri. Explore the full history of Missouri and primary source records from this era.

The antebellum period (roughly 1820–1861) was defined by westward expansion, deepening sectional conflict over slavery, and the displacement of Indigenous peoples. The Indian Removal Act of 1830 authorized the forced relocation of the Five Civilized Tribes — Cherokee, Choctaw, Creek, Chickasaw, and Seminole — from the Southeast to Indian Territory west of the Mississippi; the Cherokee removal (1838–1839), known as the Trail of Tears, killed an estimated 4,000 of 17,000 people. Texas annexation (1845) and the Mexican-American War (1846–1848) added the Southwest and California to the United States, reopening the slavery-in-new-territories debate. The Compromise of 1850, the Kansas-Nebraska Act (1854), and the Dred Scott decision (1857) each failed to resolve the conflict, and Bleeding Kansas saw pro-slavery and anti-slavery settlers fight a guerrilla civil war from 1854 to 1861. The publication of Uncle Tom's Cabin (1852), John Brown's raid on Harper's Ferry (1859), and Abraham Lincoln's election in 1860 accelerated Southern secession.

Content adapted from Wikipedia under the Creative Commons Attribution-ShareAlike 4.0 International License. Source: Wikipedia: Bleeding Kansas.