Events that led to the Civil War By robfernandez532 Period: Jan 1, 1841 to Dec 31, 1861 Events May 1, 1842 William Lloyd Garrison Urged Northern states to secede. Jun 1, 1843 Frederick Douglas Aug 1, 1846 Wilmot Proviso Aug 1, 1846 James K. Polk extends borderline Jan 1, 1848 Popular Soverignty Feb 1, 1848 Mexican Cession Aug 1, 1848 Free Soil Party Jan 1, 1850 Fugitive Slave Act Jan 1, 1850 Compromise of 1850 Jul 1, 1850 Lincoln-Douglas Debates Mar 1, 1852 Uncle Tom's Cabin Mar 1, 1853 Pierce Elected Jan 1, 1854 Kansas-Nebraska Act Jul 1, 1854 Rebublican Party Created May 1, 1856 Raid on Harper's Ferry May 1, 1856 Bully Brooks May 1, 1856 Pottawatomie Massacre Jul 1, 1856 Grimke Sisters Mar 1, 1857 Dred Scott Aug 1, 1858 Freeport Doctrine Nov 1, 1859 Oregon joins Union Nov 4, 1860 Abe Lincoln Elected Jan 1, 1861 Crittenden Compromise Feb 1, 1861 Confederacy Established Mar 1, 1861 Corwin Amendment Mar 1, 1861 Lincoln's Inaguration Mar 1, 1861 Jefferson Davis Elected Mar 1, 1861 Fort Sumter May 1, 1861 States leave Union