Spaghetti Junction just north of Birmingham.
No, the busiest river in Europe is the Danube.
Marseille is the busiest port in France, and the busiest port on the Mediterranean sea, and the third-busiest in Europe.
Sea routes to the Far East from Europe (through the Suez Canal and Malacca Straits) are the busiest.
The Port of Felixstowe is the busiest port in England, the 6th busiest in Europe and the 35th busiest in the world.
Belgium's busiest and largest harbour is Antwerp, which is Europe's second busiest port. Only slightly less busy is Bruges-Zeebrugge which may now be among the top 5 ports of Europe.
Rotterdam in the Netherlands(Holland)
In Rotterdam, in the Netherlands.
Rhine river
In Europe.
Fort Port, Scotland
Rotterdam in the Netherlands.