This document discusses the history of slavery around the world from ancient times to its abolition. It describes how slavery originated in Greece and Rome, using captured people from wars. The trans-Atlantic slave trade brought millions of Africans to America to work on plantations. Abolition efforts increased during the American Civil War until the 13th amendment formally abolished slavery across the United States. Famous abolitionists like Harriet Tubman and Frederick Douglass fought against the dehumanizing institution.