| A | B |
| Stephen Douglas | Illinois senator who supported the Kansas-Nebraska Act. |
| Abraham Lincoln | Republican candidate who won the presidential election in 1860. |
| John Brown | An abolitionist who used violence to try and stop the spread of slavery. |
| Harriet Beecher Stowe | Author of Uncle Tom's Cabin |
| Dred Scott | Slave who sued for his freedom. The court declared he could not sue because he was property and not a U.S. citizen. |
| Jefferson Davis | President of the Confederate States of America. |
| Fugitive Slave Law of 1850 | Declared that all citizens must catch runaway slaves and return them to the South. |
| Civil War | War between two opposing groups of citizens belonging to the same country. |
| Nationalism | Pride in one's country. |
| Sectionalism | Economic differences that divide a country. |
| Republican | Political party that formed to stop slavery from spreading into the western territories. |
| Secede | To withdraw or leave. |
| Harper's Ferry | U.S. arsenal that was attacked by John Brown. |
| Forth Sumter | Located in South Carolina it surrendered to the Confederate Army. |
| Missouri Compromise | Missouri added as a slave state. Maine added as a free state. No slavery allowed north of 36 30. |
| Compromise of 1850 | California admitted as a free state. More severe fugitive slave law. Slave trade in Washington D.C. abolished. Mexican Cession would have popular sovereignty. |
| Kansas-Nebraska Act | Split Nebraska Territory into Kansas & Nebraska. New territories would have popular sovereignty. Reversed the Missouri Compromise. |
| Popular Sovereignty | Territories could vote on whether they wanted slavery or not. |
| Abolitionist | Person who feels strongly against slavery. |
| Uncle Tom's Cabin | Very influential book that angered both the North & South but for different reasons. |