PBS discusses The Fugitive Slave Law of 1850, which made the hunting down of escaped slaves, even in free states, fully legal.
The History Channel explores the Missouri Compromise of 1820, a temporary solution to the brewing controversy over slavery in the United States.
This TED Ed lesson explains the Kansas-Nebraska Act of 1854 – the legislation that ultimately spurred the formation of the Republican Party.
The Smithsonian uses animated historical maps to reveal how slavery expanded across the United States.
The University of Virginia explains the campaigns and elections of 1852 and the decline of the Whig Party.
PBS discusses Dred Scott’s path to suing for his freedom in 1847.