Germany's ___ Basin

• Between two rivers, what was that industrial region?
• Essen's river
• European region
• A tributary of the Rhine
• Western Germany's river to the Rhine
• Essen's basin
• River that passes by Essen, Germany
• Krupp's milieu
• River originating near Winterberg

Wikipedia Word definitions in Wikipedia
The Ruhr (, ), or the Ruhr district , Ruhr region or Ruhr valley , is a polycentric urban area in North Rhine-Westphalia , Germany . With a population density of 2,800/km² and a population of eight and a half million, it is the largest urban agglomeration ...