The United Colonies of New England, commonly known as the New England Confederation, was a confederal alliance of the New England colonies of Massachusetts Bay, Plymouth, Saybrook (Connecticut), and New Haven formed in May 1643. Its primary purpose was to unite the Puritan colonies in support of the church, and for defense against the American Indians and the Dutch colony of New Netherland. It was the first milestone on the long road to colonial unity and was established as a direct result of a war that started between the Mohegan and Narragansett Indian tribes. Its charter provided for the return of fugitive criminals and indentured servants, and served as a forum for resolving inter-colonial disputes. In practice, none of the goals were accomplished.

New England is a region comprising six states in the Northeastern United States: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. It is bordered by the state of New York to the west and by the Canadian provinces of New Brunswick to the northeast and Quebec to the north. The Gulf of Maine and Atlantic Ocean are to the east and southeast, and Long Island Sound is to the southwest. Boston is New England's largest city and the capital of Massachusetts. Greater Boston is the largest metropolitan area, with nearly a third of New England's population; this area includes Worcester, Massachusetts, the second-largest city in New England, Manchester, New Hampshire, the largest city in New Hampshire, and Providence, Rhode Island, the capital of and largest city in Rhode Island.