| A | B |
|---|
| 1850 | Clay Compromise |
| 1854 | Republican Party formed |
| 1854 | Kansas-Nebraska Act |
| 1852 | UNCLE TOM'S CABIN published |
| 1856 | Charles Sumner attacked on the U.S. Senate floor |
| 1857 | DRED SCOTT v. SANDFORD decided by the U.S. Supreme Court |
| 1859 | John Brown and his accomplices took over the arsenal at Harpers Ferry |
| 1860 | Lincoln's election as president |
| 1858 | Lincoln-Douglas debates while running for the Illinois U.S. Senate seat |
| 1856 | Violence erupted in Kansas, including at Pottawatomie Creek |
