Well, everybody knows that the state took its name after the similarly named river. The word "Ohio" is translated from the Iroquois language as "the big river". By the way, if one wants to visit some cultural heritage sites left after Native American tribes, welcome to Ohio! The state is also famous for its advantageous geographical location.

Interestingly, Ohio's flag is unique in its non-rectangular shape.

More Info: en.wikipedia.org