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 the proper tone and spirit called for by the occasion. Jefferson's most immediate sources were two documents written in June 1776: his own draft of the preamble of the Constitution of Virginia, and George Mason's draft of the Virginia Declaration of Rights. Ideas and phrases from both of these documents appear in the Declaration of Independence. They were, in turn, directly influenced by the 1689 English Declaration of Rights, which formally ended the reign of King James II. During the American Revolution, Jefferson and other Americans looked to the English Declaration of Rights as a model of how to end