1. In 1805, the Treaty of Fort Industry was signed between the United States and the Wyandot and Delaware Native American tribes, ceding tribal lands in Ohio to the US government.

2. On June 15, 1904, the first electric railway service began in Columbus, Ohio, sparking a revolution in transportation that would transform the state and the country.

3. In 1912, the Ohio National Guard was mobilized to quell labor unrest in the steel mills of Youngstown, Ohio, leading to clashes between striking workers and soldiers that resulted in several deaths.

4. On June 15, 1939, the Ohio Senate passed the state's first public housing law, aimed at providing affordable housing for low-income residents in cities across the state.

5. In 1963, Ohio became the first state in the country to offer in-state tuition to undocumented immigrants, a policy that has continued to this day and has made Ohio a destination for immigrants seeking higher education opportunities.