| A | B |
| Missouri Compromise 1820 | compromise between slave and free states, Missouri became slave state and Maine became free state, kept balance |
| Compromise of 1850 | Compromise between slave and free states,California would be admitted as a free state and passed a fugitive slave law |
| Fugitive Slave Act 1850 | northerners had to help southerners capture runaway slaves |
| Harriet Beecher Stowe | wrote "Uncle Tom's Cabin" about slavery, helps abolitionist movement |
| Kansas-Nebraska Act | allowed new states to decided on slavery through popular sovereignty (voting) |
| Henry Clay | senator known as Great Compromiser |
| John C. Calhoun | favored states rights, secession, and was senator from South Carolina |
| Dred Scott v. Sandford | Supreme Court case that ruled that slaves were property not citizens so they cannot sue in court |
| Bleeding Kansas | violent event in Kansas between pro slavery and anti slavery groups |