Detroit was in a North American colony.
Detroit ( [ dᵻˈtrɔɪt ] ) is the most populous city in the U.S. state of Michigan , the largest city on the United States -- Canada border , and the seat of Wayne County . The City of Detroit anchors the second-largest economic region in the Midwest , behind Chicago , and the thirteenth-largest in the United States . William Penn ( 14 October 1644 -- 30 July 1718 ) was the son of Sir William Penn , and was an English real estate entrepreneur , philosopher , early Quaker , and founder of the Province of Pennsylvania , the English North American colony and the future Commonwealth of Pennsylvania .