Final answer:
Ann Arbor, Grand Rapids, Flint, and Dearborn are all cities located in the state of Michigan.
Step-by-step explanation:
The state that has Ann Arbor, Grand Rapids, Flint, and Dearborn is Michigan. These cities are integral parts of the state's geography and history. For example, Detroit, which is close to Dearborn, is a significant city in Michigan that played a crucial role in manufacturing during World War II, earning the nickname 'Arsenal of Democracy'. Furthermore, Michigan had three assimilation schools located in Baraga, Mt. Pleasant, and Harbor Springs. Additionally, the US District Courts in Michigan are organized into judicial circuits, with courts in Ann Arbor, Bay City, Flint, Port Huron, Grand Rapids, Lansing, Kalamazoo, and Marquette.