Missouri Compromise of 1820 Map - U.S. Expansion and Slavery Division #2242005 (License: Personal Use)

The map highlights the geographic division established by the Missouri Compromise: slavery prohibited north of latitude 36°30′ (except Missouri), with new states formed from the Louisiana Purchase subject to this rule. It shows free states (white), slave states (dark gray), territories open to slavery (medium gray), and those closed to slavery (light gray), including the newly admitted states of Missouri and Maine. The compromise temporarily eased sectional conflict but set the stage for future disputes over western expansion.

Used in educational history websites, digital archives, and curriculum resources to illustrate early 19th-century U.S. political geography and the origins of the Civil War. Matches user intent for learning about antebellum compromises, slavery expansion, and congressional negotiations.