On February 10, 1763, England and France formally ended the French and Indian War with the Treaty of Paris, which officially transferred Michigan from French to British rule. By that time, English troops had already overtaken French forts at Detroit, Michilimackinac and St. Joseph and begun the shift from fur trades and forestlands to agricultural settlements.
Sources:
Michigan Every Day
Treaty of Paris, 1763, U.S. Department of State, Office of the Historian.