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
United States Declaration of Independence Parliament was the legislature of Great Britain only, and that the colonies, which had their own legislatures, were connected to the rest of the empire only through their allegiance to the Crown. The issue of Parliament's authority in the colonies became a crisis after Parliament passed the Coercive Acts (known as the Intolerable Acts in the colonies) in 1774 to punish the colonists for the Gaspee Affair of 1772 and the Boston Tea Party of 1773. Many colonists saw the Coercive Acts as a violation of the British Constitution and thus a threat to the liberties of all of British