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 colonies, such as the Stamp Act of 1765 and the Townshend Acts of 1767. Parliament believed that these acts were a legitimate means of having the colonies pay their fair share of the costs to keep them in the British Empire. Many colonists, however, had developed a different conception of the empire. The colonies were not directly represented in Parliament, and colonists argued that Parliament had no right to levy taxes upon them. This tax dispute was part of a larger divergence between British and American interpretations of the British Constitution and the extent of Parliament's authority in the