Massachusetts (ˌmæsəˈtʃuːsɪts , -zɪts ; Muhsachuweesut məhswatʃəwiːsət), officially the Commonwealth of Massachusetts, is a state in the New England region of the Northeastern United States. It borders the Atlantic Ocean and Gulf of Maine to its east, Connecticut and Rhode Island to its south, New Hampshire and Vermont to its north, and New York to its west. Massachusetts is the sixth-smallest state by land area; with over seven million residents, it is the most populous state in New England, the 16th-most-populous in the country, and the third-most densely populated, after New Jersey and Rhode Island. The state's capital and most populous city, as well as its cultural and financial center, is Boston. Other major cities are Worcester, Springfield and Cambridge. Massachusetts is also home to the urban core of Greater Boston, the largest metropolitan area in New England and a region profoundly influential upon American history, academia, and the research economy. Originally dependent on agriculture, fishing, and trade, Massachusetts was transformed into a manufacturing center during the Industrial Revolution. During the 20th century, the state's economy shifted from manufacturing to services, and in the 21st century it is a global leader in biotechnology, engineering, higher education, finance, and maritime trade.
Massachusetts was a site of early English colonization: the Plymouth Colony was founded in 1620 by the Pilgrims of the Mayflower, and in 1630 the Massachusetts Bay Colony, taking its name from the Indigenous Massachusett people, established settlements in Boston and Salem. In 1692, the town of Salem and surrounding areas experienced one of America's most infamous cases of mass hysteria, the Salem witch trials. In 1777, General Henry Knox founded the Springfield Armory, which, during the Industrial Revolution, catalyzed numerous important technological advances, including interchangeable parts. In 1786, Shays' Rebellion, a populist revolt led by disaffected American Revolutionary War veterans, influenced the United States Constitutional Convention.