1. In 1858, the Ohio legislature passes a law prohibiting racially integrated schools. The law remained in place until the landmark Supreme Court case of Brown v. Board of Education in 1954.

2. On March 30, 1870, the 15th Amendment to the U.S. Constitution was ratified, granting African American men the right to vote. This law helped to pave the way for increased political representation and civil rights activism in Ohio and throughout the nation.

3. In 1913, the Great Dayton Flood devastated the city, claiming over 360 lives and causing millions of dollars in damage. The flood became a turning point for the city and Ohio, leading to improved flood control measures and a stronger sense of community.

4. March 30, 1946, marked the founding of the Cleveland Browns, one of Ohio's most iconic professional sports franchises. The team went on to win seven championships and became a beloved part of the state's cultural identity.

5. In 2001, Ohio native Zachary Taylor became the youngest person ever to earn a Ph.D. in mathematics at the age of 21. Taylor went on to become a professor and researcher at institutions such as the Massachusetts Institute of Technology (MIT) and Harvard University, and his work has made significant contributions to the field of number theory.