The Missouri Compromise, 1820
A map of the United States at the time of the Missouri Compromise of 1820. The map is keyed to show the free states, free territory, slave holding states, and shows the Missouri Compromise Line at latitude 30°30’ N....

United States, 1821
A map of the United States and territories in 1821 after the Missouri Compromise, showing the Free States and territories, the Slave States and territories, and the transitional territories at the time. The map is color–coded to show the States...

The United States, 1821
A map of the United States and territories showing the westward expansion after the Missouri Compromise (1820) and the admission of Missouri into the Union in 1821. The map is color–coded to show the state boundaries (green), the territories cl...

The Result of the Missouri Compromise, 1821
A map of the United States in 1821 showing the results of the Missouri Compromise of 1820 over the issue of prohibition of slavery. The map is coded to show the areas of the Free States, the Slave States, the Michigan Territory as Free by the Ordinan...

United States, 1825–1830
A map of the United States during the Presidency of John Quincy Adams (1825&ndash1829) showing the States at the time, the Unorganized Territory of the Louisiana Purchase, and the Oregon Country under joint control with Great Britain....

Slavery and the Slave Trade, 1830–1850
A map of the United States during the period of 1850 to 1850 showing the effects of slavery, the slave trade, and the abolition movement on territorial development. The map uses colored patterns to indicate the areas and phases of abolition and admis...

Slavery and Slave Trade, 1830–1850
A map of the United States during the period of 1850 to 1850 showing the effects of slavery, the slave trade, and the abolition movement on territorial development. The map uses colored patterns to indicate the areas and phases of abolition and admis...

Black Hawk War, 1832
A map of the Illinois and Michigan territory (present day Illinois and Wisconsin) showing the battle sites of the Black Hawk War of 1832. The map shows Black Hawk's Village (Saukenuk) near Rock Island on the Mississippi, Prophetstown, Dixon's Ferry, ...

Seminole War, 1835–1842
A map of the Florida peninsula showing the forts and battle sites during the Second Seminole War (1835–1842), including the site of Dade's Massacre, Taylor's Battle, Fort Drane, Fort King, and the location of Fort Clinch at the time on the With...

Texas Controversy and Territorial Adjustment, 1836–1850
A map of the western United States between 1836 and 1850 showing the Texas controversy and territorial adjustments at the time. The map is color–coded to show the unorganized territory of the Louisiana Purchase and the boundary line with the Sp...