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 States Declaration of Independence followed, many stories about the writing and signing of the document were published for the first time. When interest in the Declaration was revived, the sections that were most important in 1776 were no longer relevant: the announcement of the independence of the United States and the grievances against King George. But the second paragraph was applicable long after the war had ended, with its talk of self-evident truths and unalienable rights. The Constitution and the Bill of Rights lacked sweeping statements about rights and equality, and advocates of groups with grievances turned to the Declaration for support. Starting in