Slavery in the colonial United States 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 - were
Colombian Declaration of Independence Spanish colonies in the Americas were forbidden to trade with other countries and their colonies, such as Great Britain and British North America, and the French Empire and New France. Spain was their only source of goods and merchandise, although it was unable to fulfill the trade demands of its colonies. Furthermore, Charles III's support for the independence of the United States generated new taxes, causing unrest in Spain's colonies in the Americas, such as the Revolt of the Comuneros (New Granada) and the Rebellion of Túpac Amaru II. Another major tension was the policy of excluding Criollos, or locally