| A | B |
| abolitionists | someone who wanted to abolish or end slavery |
| underground railroad | system of secret routes that escaping slaves followed to freedom |
| passengers | what slaves were refered to as on the Underground Railroad |
| conductors | people who guided the slaves on the Underground Railroad |
| station | places where slaves hid |
| Missouri Compromise of 1820 | created an imaginary line east to west throught the Louisiana Territory. Slavery allowed in states south of the line. |
| Compromise of 1850 | California entered the Union as free state. North also agreed to the Fugitive Slave Law |
| Fugitive Slave Law | law that stated police in free states could capture slaves escaping from slave states |
| Kansas-Nebraska Act | Kansas and Nebraska were allowed to decided for themselves if they would enter the Union as free or slave states |
| Dred Scott Decision | Stated that slaves were property |