'Large ships can sail over 100 miles inland to Washington, D.C. on this river'
Potomac
U.S. GEOGRAPHY: Large ships can sail over 100 miles inland to Washington, D.C. on this river
Large ships can sail over 100 miles inland to Washington, D.C. on this river
Large ships can sail over 100 miles inland to Washington, D.C. on this river
U.S. GEOGRAPHY
Potomac
U.S. GEOGRAPHY