1. In 1803, Ohio became the 17th state in the United States. October 31 is celebrated as the state's birthday, also known as Ohio Statehood Day.

2. John Brown, an abolitionist who led a raid on a federal armory in Virginia in 1859, was born in Torrington, Connecticut on October 31, 1800. Brown's raid was an important event in the lead-up to the Civil War.

3. The National Museum of the United States Air Force, located at Wright-Patterson Air Force Base near Dayton, opened on October 31, 1971. The museum is the oldest and largest military aviation museum in the world.

4. The Cleveland Cavaliers, led by LeBron James, won their first NBA championship on October 31, 2016. The Cavaliers defeated the Golden State Warriors in a thrilling seven-game series, becoming the first team in NBA history to come back from a 3-1 deficit in the finals.

5. The Ohio State Buckeyes football team defeated the Michigan Wolverines 42-39 on October 31, 2015. The game, known as "The Game" to fans of the two teams, is one of the biggest rivalries in college football. The Buckeyes went on to win the National Championship that season.