German number in advanced Silesia and advanced Silesian diaspora in Germany

The German number in advanced Silesia has been operating continuously since the establishment of fresh borders after the First planet War. The first thing to come to head is simply a 1921 situation erstwhile the border was moved westward. This actually happened in cities specified as Katowice or Chorzów, but it should be kept in head that earlier the German number began to form [...]