1. In 1832, the Cholera epidemic hit Cincinnati, Ohio, killing an estimated 700 people in the city. It was the first recognized major outbreak of cholera in the United States.

2. On July 6, 1868, the Ohio Constitutional Convention completed its work, with the new constitution adopted by voters later that year. The new constitution created a public education system, established a state board of agriculture, and set up Ohio's jury system.

3. In 1923, the first professional football game - between the Columbus Panhandles and the Chicago Tigers - was played in Columbus, Ohio. The Tigers won 6-0.

4. On July 6, 1946, the National Basketball Association (NBA) was founded in New York City, with Ohio-based team the Cleveland Cavaliers joining the league in 1970.

5. In 1998, the Ohio State Buckeyes football team announced that they would be playing their home games at the new Ohio Stadium, also known as the "Horseshoe", at a capacity of over 100,000 fans. The stadium has since become an iconic Ohio landmark and is one of the largest stadiums in the country.