The biggest river that flows trough whole Slovenia is Sava.
The answer you are looking for is the Danube. It actually flows through 4 capital cities: Vienna - Austria Budapest - Hungary Belgrade - Serbia Bratislava - Slovakia
The Danube flows through four capitals: Bratislava, Belgrade, Budapest, and Vienna.
It flows in Europe through Austria (Vienna), Hungary (Budapest), Serbia (Belgrade), Slovakia (Bratislava) & Romania and then into the Black Sea.
The Danube River flows through several major cities, including Vienna (Austria), Budapest (Hungary), Belgrade (Serbia), and Bratislava (Slovakia).
The river that flows through Rome should be River Tiber.
The river that flows through Felsberg, Germany is the Fulda River.
The Ganges River flows through India, while the Indus River flows through Pakistan
The river that flows through Montrose, Colorado is the Uncompahgre River.
The river Medway flows through Rochester
Eden is the river that flows through Carlisle.
river seine flows through Rouen
Danube, which flows through Slovakian cities of Bratislava, Komarno and Sturovo, is the river which is a border between Slovakia and Hungary, on some 200 km.