The war was fought primarily along the frontiers separating New France from the British colonies from Virginia to Nova Scotia. The Ohio Country (sometimes called the Ohio Territory or Ohio Valley by the French) was the name used in the 18th century for the regions of North America west of the Appalachian Mountains and in the region of the upper Ohio River south of Lake Erie. The territory encompassed roughly the present-day states of Ohio, eastern Indiana, western Pennsylvania, and northwestern West Virginia. The issue of settlement in the region is considered to have been a primary cause of the French and Indian War and a later contributing factor to the American Revolutionary War.