Slavery in the United States Slavery in the United States Slavery in the United States was the legal institution of human chattel enslavement, primarily of Africans and African Americans, that existed in the United States of America in the 18th and 19th centuries. Slavery had been practiced in British America from early colonial days, and was legal in all Thirteen Colonies at the time of the Declaration of Independence in 1776. It lasted in about half the states until 1865, when it was prohibited nationally by the Thirteenth Amendment. As an economic system, slavery was largely replaced by sharecropping. By the time of the American
United States Declaration of Independence another copy incorporating these alterations. The committee presented this copy to the Congress on June 28, 1776. The title of the document was "A Declaration by the Representatives of the United States of America, in General Congress assembled." Congress ordered that the draft "lie on the table" and then methodically edited Jefferson's primary document for the next two days, shortening it by a fourth, removing unnecessary wording, and improving sentence structure. They removed Jefferson's assertion that Great Britain had forced slavery on the colonies in order to moderate the document and appease persons in Great Britain who supported the Revolution.