Slavery in the colonial United States December 1865. Slavery in the colonial United States Slavery in the colonial area which later became the United States (1600–1776) developed from complex factors, and researchers have proposed several theories to explain the development of the institution of slavery and of the slave trade. Slavery strongly correlated with Europe's American colonies' need for labor, especially for the labor-intensive plantation economies of the sugar colonies in the Caribbean, operated by Great Britain, France, Spain, and the Dutch Republic. Most slaves who were brought or kidnapped to the Thirteen British colonies - the Eastern seaboard of what later became the United States
Decolonization of the Americas and France has fully "integrated" most of its former colonies as fully constituent "departments" of France. The United States of America declared independence from Great Britain on July 2, 1776 (although the event is now commemorated on July 4, the date when the Declaration of Independence was officially adopted by Congress), in so doing becoming the first independent, foreign-recognized nation in the Americas and the first European colonial entity to break from its mother country. Britain formally acknowledged American independence in 1783 after its defeat in the American Revolutionary War. Although initially occupying only the land east of the Mississippi