Slave States vs. Free States

Today you will be given 3 maps and instructions for completing each one.

In the years leading up to the Missouri Compromise of 1820, tensions began to rise between pro-slavery and anti-slavery factions within the U.S. Congress and across the country. They reached a boiling point after Missouri’s 1819 request for admission to the Union as a slave state, which threatened to upset the delicate balance between slave states and free states. To keep the peace, Congress orchestrated a two-part compromise, granting Missouri’s request but also admitting Maine as a free state. It also passed an amendment that drew an imaginary line across the former Louisiana Territory, establishing a boundary between free and slave regions that remained the law of the land until it was made void by the Kansas-Nebraska Act of 1854.

Divisions over slavery in territory gained in the Mexican-American (1846-48). War were resolved in the Compromise of 1850. It consisted of laws admitting California as a free state, creating Utah and New Mexico territories with the question of slavery in each to be determined by popular sovereignty, settling a Texas-New Mexico boundary dispute in the former's favor, ending the slave trade in Washington, D.C., and making it easier for southerners to recover fugitive slaves.

The Kansas-Nebraska Act was an 1854 bill that mandated "popular sovereignty"--allowing settlers of a territory to decide whether slavery would be allowed within a new state's borders. Proposed by Stephen A. Douglas--Abraham Lincoln's opponent in the influential Lincoln-Douglas debates--the bill overturned the Missouri Compromise's use of latitude as the boundary between slave and free territory. The conflicts that arose between pro-slavery and anti-slavery settlers in the aftermath of the act's passage led to the period of violence known as Bleeding Kansas, and helped paved the way for the American Civil War (1861-65).