The answer is the Seine river.
River Ganga
The Paraguay River runs through the city of Asunción, which is the capital of Paraguay. This river forms the border between Argentina and Paraguay.
The Potomac River.
The Seine river.
Seine
London, England. The River Thames runs through London.
The river Seine runs through Paris.
The Thames flows through London.
Prague is the capital and largest city in the Czech Republic. Prague is located on the Vltava River.
Washington D.C. is the capital city of the United States. The Potomac River forms part of the border between Maryland and Washington, D.C.
Which city?