1. The first known settlement in Ohio was founded on May 2, 1788 by a group of Revolutionary War veterans. The settlement, known as Marietta, was established at the mouth of the Muskingum River and served as a hub for westward expansion.

2. On May 2, 1803, Ohio became the 17th state to join the United States. The state's motto, "With God, all things are possible," was adopted in 1959 and appears on the state flag.

3. The Cincinnati Reds played their first game at the newly-constructed Riverfront Stadium on May 2, 1970. The Reds defeated the Atlanta Braves 8-2 in front of a sellout crowd of 52,000 fans.

4. A tornado outbreak in Ohio on May 2, 2008, resulted in 13 deaths and widespread destruction across the state. The deadliest tornado of the outbreak was an EF4 that struck the town of West Liberty, causing significant damage to homes, businesses, and infrastructure.

5. On May 2, 2018, Ohio Governor John Kasich signed a bill into law that legalized medical marijuana in the state. The law allows patients with certain medical conditions to use cannabis products to treat their symptoms, but prohibits smoking and home-growing. The first dispensaries opened in early 2019.