S1 (Rhine-Ruhr S-Bahn) Services ran via Düsseldorf Airport Terminal station from 24 May 1998 to 28 May 2000. Services were extended from Düsseldorf to Solingen on 13 December 2009, replacing part of the former line S 7 service. S1 (Rhine-Ruhr S-Bahn) Line S1 is a S-Bahn line on the Rhine-Ruhr network. It is operated by DB Regio. It runs from Dortmund west over Essen to Duisburg. From there it travels south to Düsseldorf and Hilden before continuing to Solingen. It is operated at 20 minute intervals, using coupled sets of class 422 four-car electrical multiple units. Line S 1 runs over lines built
Ruhr Question the vision of a "Ruhr basin" ("Ruhrbecken") as free from a future German state or German states. At the conferences of the Allies, the question of the Ruhr came more and more into the agenda, mostly due to French proposals. At the Foreign Minister's Conference, which took place in London from September 11th, 1945 until October 2nd, 1945, French foreign minister Georges Bidault issued a memorandum of 13 September 1945. This memorandum stated that the separation of the Rhineland and Westphalia, including the Ruhr area of the German Reich, as "indispensable for the protection of the frontier and an essential