Missouri Compromise Map: Free vs. Slave States in Pre-Civil War America #2241985 (License: Personal Use)

The map highlights the geographic division established by the Missouri Compromise of 1820, with green areas denoting slave states and territories open to slavery, orange representing free states and territories, and a brown region marking the Spanish Territory. The red Missouri Compromise Line at 36°30′ explicitly prohibited slavery in new territories north of that latitude, while allowing it southward-including Missouri’s admission as a slave state. The unorganized territory and Michigan Territory reflect westward expansion amid growing sectional strife.

Used in educational history resources, museum exhibits, and curriculum materials to teach U.S. antebellum politics, the expansion of slavery, and causes of the Civil War; targets students, educators, and history enthusiasts seeking visual context for legislative compromises.