| Term | Definition |
| The Missouri Compromise | A compromise that allowed Missouri to enter the union as a slave state and Maine to enter as a free state |
| Compromise of 1850 | A series of bills aimed at resolving the territorial and slavery controversies arising from the Mexican-American War |
| Fugitive Slave Law of 1850 | It declared that all runaway slaves be brought back to their masters. |
| Kansas-Nebraska Act | Created the territories of Kansas and Nebraska |
| Dred Scott Decision | All blacks slave or free were considered property |
| Emancipation Proclamation | Two executive orders issued by United States President Abraham Lincoln during the American Civil War. |
| Draft | When members of a union are sent to war |
| Habeas Corpus | It protects the individual from harming himself or being harmed by the judicial system |
| Amendment 13 | It formally abolished slavery in the United States |
| Amendment 14 | An amendment that was intended to secure the rights of former slaves |
| Amendment 15 | An amendment that granted African American men the right to vote |
| Jim Crow Laws | State and local laws in the United States enacted between 1876 and 1965 |
| Popular Sovereignty | The right for a state to vote on wether to become a free or slave state upon entering the Union |