1. The Battle of Lake Erie: On September 12, 1813, one of the most significant naval engagements in American history took place off the coast of Ohio in Lake Erie. The Battle of Lake Erie involved American forces led by Oliver Hazard Perry and British forces led by Robert Heriot Barclay. The Americans emerged victorious, which helped secure the Northwest Territory from British invasion during the War of 1812.

2. Ohio Statehood Day: September 12 is also Ohio Statehood Day, which celebrates the day in 1803 when Ohio officially became the 17th state in the United States. In honor of this occasion, there are often parades, fireworks displays, and other festivities that take place throughout the state each year.

3. Grand Prix Racing: In 1976, the United States Grand Prix was held at the iconic Watkins Glen International Raceway in Ohio on September 12. Formula One drivers from all over the world competed in the race, which was won by Austrian driver Niki Lauda.

4. Labor Day March: On September 12, 1894, a group of striking workers led by Eugene V. Debs marched from Cincinatti to Toledo to raise awareness about the plight of working people in America. This march helped lay the groundwork for the rise of the American labor movement in the 20th century.

5. Great Miami River Flood: On September 12, 1913, the Great Miami River in Ohio reached record levels, causing widespread flooding throughout the region. This flood was one of the worst natural disasters in Ohio history, costing millions of dollars in damages and causing thousands of people to lose their homes and livelihoods. Nevertheless, the state and its people rallied together to recover from the disaster, rebuilding their communities and strengthening their bonds in the face of adversity.