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
History of the United States (1776–1789) consent of the governed", as well as listing the main colonial grievances against the crown. July 4 ever since has been celebrated as the birthday of the United States. The Founding Fathers represented a cross-section of Patriot leadership. According to a study of the biographies of the 56 men who signed the Declaration of Independence: The British returned in force in August 1776, landing in New York and defeating the fledgling Continental Army at the Battle of Long Island in one of the largest engagements of the war. They quickly seized New York City and nearly captured General Washington and