US National Archives
Our Documents: The Kansas Nebraska Act
An outstanding, interactive copy of the Kansas-Nebraska Act, the legislation that repealed the Missouri Compromise. Historical context included, as well as links to larger images, a typed transcript, and a downloadable PDF file.
PBS
Africans in America: Missouri Compromise
This PBS site offers information about the compromise that settled the question of whether slavery would be allowed in the vast area acquired from France in the Louisiana Purchase of 1803.
National Geographic
National Geographic: The Underground Railroad Route
A classroom activity enhancing study about slavery in the United States focused on the Underground Railroad. Students will explore the slave and free states and look at routes the Underground Railroad took to help slaves escape to...
Digital History
Digital History: The Texas Question in American Politics
A very interesting explanation of how Texas was annexed to the United States despite much opposition. Read about the false conspiracy put forth by pro-slavery Southerners concerning Great Britain's plan for Texas.
Texas Public Broadcasting
Texas Pbs: Texas Our Texas: Early Statehood 1845 1861
Examines the circumstances surrounding Texas's entry into the Union in 1845 as a slave state. It was an uneasy union, with ongoing controversy around the issue of slavery. This lasted through the Mexican-American War and helped to...
Texas State Historical Association
Texas State Historical Association: Slavery
Find out why Texas was the last frontier of slavery in the United States during the middle of the nineteenth century.
Lumen Learning
Lumen: Boundless: u.s. History: The Compromise of 1850
Presents the events leading up to the passing of the Compromise of 1850, followed by a description of those events, the content of the Compromise, and its impact.
The History Place
The History Place: The Kansas Nebraska Act
This site from The History Place talks about the Kansas Nebraska Act and the effects caused by its creation. The information is brief but very helpful for the subject.