1. Ohio became a state: July 14, 1803 marks the day when Ohio officially became a state of the United States. This was just over two years after the signing of the Northwest Ordinance, which paved the way for the creation of new states in the region.

2. The Ohio State Fair: The Ohio State Fair, which is now one of the largest state fairs in the country, was first held on July 14, 1850 in Cincinnati. Over the years, the fair has grown to include a wide variety of attractions, including livestock shows, concerts, and carnival rides.

3. Battle of Buffington Island: On July 14, 1863, Union forces won a decisive victory at the Battle of Buffington Island, which took place on the Ohio River near Portland, Ohio. The battle was an important moment in the Civil War, as it prevented Confederate forces from crossing the Ohio River and launching an invasion of the North.

4. Great Flood of 1913: One of the worst natural disasters in Ohio history occurred during March 1913, but on July 14, 1913, the flood waters finally receded after causing devastation throughout the state.

5. Reds become the first team to broadcast a game on television: On July 14, 1939, the Cincinnati Reds became the first professional baseball team to broadcast a game on television, as their game against the Brooklyn Dodgers was televised on station W2XBS in New York. This was a groundbreaking moment in the history of sports broadcasting, as it marked the beginning of live sports being shown on TV.