1787: Slave states boost their power with "three-fifths" pact
1832: Maria W. Stewart: Militant abolitionist, women's rights champion
1838: Abolitionists demand Congress restore free debate on slavery
1839: Women's role is key issue in anti-slavery society split
1842: Sarah Parker Remond: Activist for human rights, women's suffrage
1847: The Crafts: Tireless speakers against slavery after daring escape
1850: Martin Delany: Abolitionist leader, champions Black self-reliance
1851: Sojourner Truth: Activist for abolition, women's rights, prison reform
1860: Last known slave ship carries over 100 captive Africans
1861: Landscape architect helps persuade Britain to shun Confederacy
1862: Congress frees all enslaved people in Washington, D.C.
1862: Republicans build on military wins to pass progressive laws
1862: Lincoln to Black leaders: "Your people should live elsewhere"
1863: Abraham Galloway: Militant activist, Union spy, civil rights leader
1864: U.S. soldiers kill, rape Native people promised asylum
1865: KKK founded; will boast over 500,000 New England members in 1920s