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
Mecklenburg Declaration of Independence though the Mecklenburg Declaration was supposedly written more than a year before the 1776 United States Declaration of Independence, the two declarations had some very similar phrases, including "dissolve the political bands which have connected", "absolve ourselves from all allegiance to the British Crown", "are, and of right ought to be", and "pledge to each other, our mutual cooperation, our lives, our fortunes, and our most sacred honor". This raised an obvious question: did Thomas Jefferson, the principal author of the American Declaration of Independence, use the Mecklenburg Declaration as a source? One person who thought so was John Adams,