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 period, and a book that Benjamin Franklin said was "continually in the hands of the members of our Congress". Armitage writes, "Vattel made independence fundamental to his definition of statehood"; therefore, the primary purpose of the Declaration was "to express the international legal sovereignty of the United States". If the United States were to have any hope of being recognized by the European powers, the American revolutionaries first had to make it clear that they were no longer dependent on Great Britain. The Declaration of Independence does not have the force of law domestically, but nevertheless it may help to