| A | B |
|---|
| Compromise of 1850 | California became a free state. New Mexico and Utah would be open to popular sovereignty. The south received a stronger fugitive slave law. |
| Kansas-Nebraska Act (1854) | Repealed the Missouri Compromise by opening the northern Louisiana Purchase area to popular sovereignty. |
| Free Soil (1848) and Republican (1854) parties | Opposed the extension of slavery into the territories. |
| Dred Scott Decision (1857) | Supreme Court declared the Missouri Compromise unconstitutional and ruled that slavery could not be banned. |
| John Brown's Raid on Harpers Ferry (1859) | Attempt to start a slave rebellion in northern Virginia. Brought on the Civil War. |
| Battle of Gettysburg (1863) | Turning point of the Civil War. Stopped Lee's second invasion of the North because the Union had the high ground. |
| Battle of Vicksburg (1863) | Split the Confederacy in two by giving the Union control of the Mississippi River. |
| Election of 1876 (Compromise of 1877) | The South accepted the Republican Hayes as the next president in exchange for him ending Reconstruction in the South. |
