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
Human rights in the United States in the Declaration of Independence of the United States, when a group of representatives from the various states signed a declaration of independence citing charges against King George III. As the American Declaration of Independence in 1776 expressed it, natural law taught that the people were "endowed by their Creator with certain unalienable Rights" and could alter or abolish government "destructive" of those rights. The United States government has declared martial law, suspended (or claimed exceptions to) some rights on national security grounds, typically in wartime and conflicts such as the United States Civil War, Cold War or the War