1. On April 4, 1846, Michigan became the first state to establish a state agricultural college, which later became known as Michigan State University.

2. On April 4, 1925, the Michigan state legislature established the Mackinac Island State Park, which is now one of the most popular tourist destinations in the state.

3. On April 4, 1949, the famous American poet Robert Frost gave a reading at Michigan State University, attracting a crowd of over 3,000 people.

4. On April 4, 1968, following the assassination of civil rights leader Martin Luther King Jr., riots erupted in Detroit, leading to widespread destruction and the deployment of the National Guard.

5. On April 4, 1987, the Michigan Wolverines basketball team won the NCAA championship, defeating the University of Illinois Fighting Illini in the final game.