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
Grand River land dispute North American colonists. However, individual member governments are free to make individual alliances. July 4, 1776 Second Continental Congress adopts Declaration of Independence. Beginning of American War of Independence. 1778 Mohawk, Onondaga, Cayuga and Seneca nations enter alliance with British Empire, in exchange for a guarantee of sovereign territory. They appoint Chief Joseph Brant as their War Chief. Oneida and Tuscarora nations negotiate a similar arrangement with rebel colonies. 1783 Britain enters into Treaty of Paris with United States of America. Neither Mohawk, Onondaga, Cayuga or Seneca are parties to this treaty. However, Great Britain unilaterally cedes these nations' territory