http://www.infoplease.com/timelines/slavery.html http://www.infoplease.com/timelines/slavery.html Timeline: Slavery in America 240 years enslaving them History of Slavery in America Timeline of Slavery in America http://www.infoplease.com/timelines/slavery.html http://www.infoplease.com/timelines/slavery.html 240 years History of Slavery in America