1688 Pennsylvania Quakers criticize slavery
1804 Underground Railroad
1817 American Colonization Society
1820 Missouri Compromise
1822 Liberia
1828 Tariff of Abominations
1831 Nat Turner Rebellion
1831 William Lloyd Garrison starts publishing The Liberator in Boston
1832 New England Anti-Slavery Society
1832-33 Nullification Crisis
1833 American Antislavery Society
1836 Texas Revolution
1839 Liberty Party
1845 Texas Annexation
1846-48 Mexican-American War
1846 Wilmot Proviso
1848 Free Soil Party
1850 Compromise of 1850
1852 Uncle Tom's Cabin
1854 Kansas-Nebraska Act
1854 Republican Party begins in Ripon, Wisconsin
1854-60 'Bleeding Kansas'
1856 James Buchanan wins Presidency
1857 Dred Scott Decision
1858 Lincoln-Douglas Debates
1859 John Brown at Harpers Ferry
1860 Abraham Lincoln elected
1860 South Carolina secedes. Six states follow
1861 Confederate States of America organizes at Montgomery
1861 Fort Sumter
1861 Proclamation of April 15
1861 Four Border states leave Union
1861 Bull Run
1862 Antietam
1862 Emancipation Proclamation
1863 Gettysburg
1863 Vicksburg
1864 Atlanta Campaign
1865 Appomattox
1865 Lincoln Assassination
1865-77 Reconstruction