KnowraDuisburgLinked fromLinked fromThe 2 pages that link to Duisburg, each with the reason it gives.All 2Broader topic 1Compared with 1RuhrBroader topic: Its harbor and steelworks made it a major gateway for the region’s heavy industry.DortmundCompared with: Duisburg’s river-port economy contrasts with Dortmund’s canal-based industrial connections.