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 minority in Parliament warned that the government was driving the colonists toward independence. Thomas Paine's pamphlet "Common Sense" was published in January 1776, just as it became clear in the colonies that the king was not inclined to act as a conciliator. Paine had only recently arrived in the colonies from England, and he argued in favor of colonial independence, advocating republicanism as an alternative to monarchy and hereditary rule. "Common Sense" made a persuasive and impassioned case for independence, which had not yet been given serious intellectual consideration in the American colonies. Paine connected independence with Protestant beliefs as