Massachusetts is one of 4 US commonwealths.
Massachusetts -LSB- mstusts -RSB- or -LSB- mstuzts -RSB- ; officially the Commonwealth of Massachusetts , is the most populous state in the New England region of the northeastern United States .	state	U.S. state	New England	New England	northeastern United States	northeastern United States	United States	United States
Four states use the term commonwealth rather than state in their full official names .	commonwealth	Commonwealth (U.S. state)
