1. On December 10, 1821, the University of Michigan was founded in Detroit. It was initially called the Catholepistemiad, or University of Michigania, and was the first public university established in the Northwest Territory.

2. The Battle of Frenchtown, which took place near present-day Monroe, Michigan, on December 10, 1812, was a decisive victory for the British and Native American forces over the American army during the War of 1812. Over 300 American soldiers were killed, and the battle is still remembered as one of the bloodiest of the war.

3. December 10, 1928, marked the first commercial flight by a plane equipped with retractable landing gear. The plane, a Curtiss Condor, was operated by American Airlines and flew from Detroit to Cleveland.

4. On December 10, 1913, Henry Ford introduced the moving assembly line for the production of his Model T automobiles at his Highland Park plant in Detroit. The innovation allowed for faster and more efficient production, ultimately lowering the cost of the cars and making them more accessible to the average consumer.

5. In 1935, on December 10th, the city of Grand Rapids became the first in the United States to add fluoride to its municipal water supply in an effort to combat tooth decay. Today, the practice is widespread and supported by major medical organizations.