| A | B |
| Compromise of 1850 | California became a free state, popular sovereignty to decide issue in Mexican Cession lands |
| Henry Clay | "Great Compromiser" |
| Fugitive Slave Act | Law making it easier to capture runaway slaves |
| Harriet Beecher Stowe | Wrote book about horrors of slavery, many people became abolitionists |
| Uncle Tom's Cabin | Book that influenced anti-slavery movement in the North |
| Stephen Douglas | Wanted transcontinental railroad, introduced idea of popular sovereignty |
| Kansas-Nebraska Act of 1854 | All Kansas-Nebraska Territories to be formed, popular sovereignty to decide slavery issue |
| Kansas | Territory that claimed to have TWO territories as a result of corrupt elections |
| Bleeding Kansas | Many died as a result of violence between pro-slave and anti-slave forces |
| Border Ruffians | Pro-slavery extremists who left Missouri and voted illegally in Kansas |
| John Brown | Extreme abolitionist who slaughtered pro-slavers |
| Abraham Lincoln | Winner of presidential election, Southern states begin to secede from the US |
| Sectionalism | loyalty to the interests of one's own region, rather than to the country as a whole. |
| Harriet Tubman | Conductor of the Underground Railroad, symbol of freedom for slaves |
| Missouri Compromise of 1820 | Missouri (slave state) and Maine (free state) admitted to keep balance of states |
| North | Pro-tariffs AND anti-slavery |
| South | Pro-slavery AND anti-tariffs |