black history timeline By Tiffany O 1787 Northwest Ordinance 1800 Gabriel's Conspiracy 1811 Slave Revolt in Louisiana 1822 The Vesey Conspiracy 1831 Nat Turner Slave Revolt 1851 Sojourner Truth, Electrifies Women's Rights Conference 1857 Dred Scott v Sanford 1861 Slave Freed in Missouri, But Lincoln Backtracks 1865 13th Amendment to the U.S. Constitution: Abolition of Slavery Jul 9, 1868 14th Amendment to the U.S. Constitution: Civil Rights 1955 Rosa Parks and the Montgomery Bus Boycott 1965 Bloody Sunday 1972 Shirley Chisholm 1992 First Female African-American Astronaut in Space 2008 Obama Election