Originally Posted by Lousada
Okay I shall give the answer and ask a new question: it is the three border point between Belgium, Holland and Germany. Belgium was the most important mining and industrial area in the nineteenth century. And of course the Ruhr area over the border was and is also an important industrial area. That is why it was so important to control the mines. I think Belgian companies are still among the worlds leading zinc producers, but the mines have been long since closed obviously.
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