1. Ohio became a state: On December 15, 1803, Ohio officially became the 17th state in the United States. The state was originally part of the Northwest Territory and was named after the Ohio River.

2. The Wright Brothers made their first flight: On December 15, 1903, the Wright Brothers successfully made their first flight in Kitty Hawk, North Carolina. While they were not from Ohio, they developed their airplane designs and conducted many of their early tests in the state.

3. The Cleveland Indians change their name: On December 15, 1914, the Cleveland baseball team changed their name from the Cleveland Naps to the Cleveland Indians. The name change was in honor of Louis Sockalexis, a Native American who played for the Cleveland Spiders in the 1890s.

4. The Ohio State University wins the first-ever college football playoff: On December 15, 2014, Ohio State defeated Oregon 42-20 to win the inaugural College Football Playoff National Championship. The game was held at AT&T Stadium in Arlington, Texas.

5. The Cleveland Browns clinch their first playoff berth in 18 years: On December 15, 2002, the Cleveland Browns defeated the Baltimore Ravens to clinch their first playoff berth since returning to the NFL in 1999. The Browns would go on to lose to the Pittsburgh Steelers in the Wild Card round.