Complex sentence: The Massachusett is a tribe of Native Americans who historically lived in areas surrounding Massachusetts Bay in what is now the Commonwealth of Massachusetts, in particular present-day Greater Boston; they spoke the Massachusett language, part of the Algonquian family.
Split into simpler sentences: The Massachusett is a tribe of Native Americans who historically lived in areas surrounding Massachusetts Bay in what is now the Commonwealth of Massachusetts, in particular present-day Greater Boston. Tribal members spoke the Massachusett language, part of the Algonquian family.