Ohio is a Midwestern state of the United States. Part of the Great Lakes region, Ohio is a cultural and geographical crossroads, which was settled by people from New England, the Middle States, Appalachia, and the upper south. Ohio was the first state admitted to the Union under the Northwest Ordinance. Its U.S. postal abbreviation is OH; its old-style abbreviation is O. Ohio is an Iroquoian word meaning ''good river.'' The name refers to the Ohio River that forms its southern border...