1. In 1865, the Ohio legislature voted to ratify the Thirteenth Amendment to the United States Constitution, which abolished slavery and involuntary servitude throughout the country.

2. On February 17, 1947, a massive explosion occurred at the Northeast Ohio steel plant in Warren. The explosion resulted in the death of 14 workers and injured dozens more.

3. In 1987, Dayton native Michael Gartner was named president of NBC News. Gartner served in this role for two years before returning to his previous position as editor of the Des Moines Register.

4. On February 17, 1992, the Ohio Supreme Court struck down a state law that required teachers to lead their classes in a daily recitation of the Pledge of Allegiance. The court ruled that the law violated the First Amendment to the U.S. Constitution.

5. In 2016, Ohio Governor John Kasich won the Republican presidential primary in his home state. Kasich went on to win a total of 166 delegates in the primary before suspending his campaign in May of that year.