KnowraRuhrLinked fromLinked fromThe 12 pages that link to Ruhr, each with the reason it gives.All 12Broader topic 3Related 5Narrower topic 4DortmundNarrower topic: Dortmund’s industrial expansion made it one of the Ruhr’s major cities.BochumNarrower topic: Bochum belongs to the Ruhr region, whose coal deposits drove its industrial expansion.Herbert GrönemeyerNarrower topic: The region’s industrial identity informs the working-class settings and accents in his early songs.Ruhr PocketNarrower topic: Its factories and transport network made the region a major strategic objective.