Important Dates in African American History By heffnerjon Period: Jan 1, 1802 to Dec 31, 1802 Ohio Constitution outlaws slavery Period: Jan 1, 1829 to Dec 31, 1829 Black citizens of Cincinnati were driven out of their homs due to white violence Period: Jan 1, 1831 to Dec 31, 1831 North Carolina bans slaves from learning to read or write Period: Jan 1, 1831 to Dec 31, 1831 Alabama makes it illegal for blacks to preach. Period: Jan 1, 1833 to Dec 31, 2013 African Free Schools were incorporated in New York Period: Jan 1, 1834 to Dec 31, 1834 South Carolina bans the teaching of enslaved or free blacks Apr 12, 1861 Civil War started Apr 9, 1865 civil war ended Aug 28, 1955 Emmitt Till was found beaten to death in a creek