ohio river

English - English

Definition of ohio river in English English dictionary: A river formed by the confluence of the Allegheny and Monongahela rivers in western Pennsylvania and flowing about 1,578 km (981 mi) to the Mississippi River at Cairo in southern Illinois. Control of the river was contested by the British and French until 1763. The region was ceded to the United States at the end of the Revolutionary War (1783). Major river, eastern central U.S. Formed by the confluence of the Allegheny and Monongahela rivers, it flows northwest out of Pennsylvania, and west and southwest to form the state boundaries of Ohio-West Virginia, Ohio-Kentucky, Indiana-Kentucky, and Illinois-Kentucky. After a course of 975 mi (1,569 km), it empties into the Mississippi River at Cairo, Ill. It is navigable and has supported commerce since the earliest settlements. The river's strategic importance was recognized by the 1750s. After the French and Indian War, the English controlled the territory around the river; {i} river flowing from Pittsburgh along the eastern and southern borders of Ohio and feeding into the Mississippi River

ohio river