| A | B |
| tariff | tax on imported goods |
| states' rights | states should have more power |
| sectionalism | loyalty to section rather than nation |
| abolitionist | wanted to end all slavery |
| discrimination | unfair treatment of groups |
| Underground Railroad | secret routes to freedom |
| slave state | allowed slave ownership |
| free state | forbid slave ownership |
| Union | USA |
| popular sovereignty | people decide |
| fugitive | someone running away |
| secession | breaking off from the country |
| Confederacy | 11 southern states that seceded |
| civil war | war within a nation between groups |