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
United Kingdom–United States relations Atlantic, such as the Baptists, Methodists, Congregationalists and Episcopalians. Britain and the United States practise what is commonly referred to as an Anglo-Saxon economy in which levels of regulation and taxes are relatively low, and government provides a low to medium level of social services in return. Independence Day, July 4, is a national celebration which commemorates the July 4, 1776 adoption of the Declaration of Independence from the British Empire. American defiance of Britain is expressed in the American national anthem, "The Star Spangled Banner", written during the War of 1812 to the tune of a British celebratory song