The Civil War By rcnkf Jan 1, 1846 Wilmot Proviso Jan 1, 1846 Mexican American War Jan 1, 1850 Compromise of 1850 Jan 1, 1852 Uncle Tom's Cabin Jan 1, 1854 Birth of Republican Party Jan 1, 1854 Kansas - Nebraska Act Jan 1, 1855 Bleeding Kansas Jan 1, 1857 Dred Scott Decision Jan 1, 1859 Harper's Ferry Jan 1, 1860 Election of 1860 Jan 1, 1861 South Leaves U.S.1