part main tran european rhine main daniube waterway which links the north sea black sea via the ports of ratterdaman
The Danube is part of the main trans-European Rhine-Main-Danube transport waterway, which links the North Sea and Black Sea via the ports of Rotterdam and Constanţa.
The is part main trans-European Rhine-Main-Danube waterway, which links the North Sea Black Sea via the ports of Rotterdam and