1. In 1845, the first issue of the anti-slavery newspaper, The Free Democrat, was published in Salem, Ohio. It advocated for the abolition of slavery and equal rights for all individuals.

2. In 1903, the Dayton Wright Brothers successfully completed the first free-flight test of their improved airplane, the Wright Flyer III. It marked a significant moment in aviation history and paved the way for further advancements in flight technology.

3. In 1923, the first professional football game was played under floodlights in Akron, Ohio. The game featured the Akron Pros and the Milwaukee Badgers and ended in a 0-0 tie.

4. In 1958, the National Aeronautics and Space Administration (NASA) was established in the United States. The Glenn Research Center in Cleveland, Ohio, would later become a key research facility for the organization.

5. In 1996, the Olympic Games were held in Atlanta, Georgia, and Ohio native Dan O'Brien won the gold medal in the decathlon event. He became a three-time world champion and one of the most successful decathletes in history.