Soppto be clear, when talking about. United Germany do we meant Germania or Deutschland? I am going with the suggestions other had that people end up calling German Dutch as that is what they used to call the language anyways. Well, in English at least. I imagine that some languages would continue to separate them, much in the way that some countries seem to call English British and American due to changes in the grammar and such. Forcing the Czecks to speak German may be difficult, especially as it was generally agreed for half a millennium that the Bohemians were not Germans and not part of the HRE. There might be an economic motive to Germanize one of the wealthier areas of Central Europe, but they might prefer keeping them as second class citizens, such as with the Rhenish Poles, or how the Japanese forced then forbid Koreans to change their names to Japanese versions.
This would be more simply done with a post-1900 POD with a Nazi victory. Unlikely that anyone would have the motive or ability to change the language of so many people otherwise, especially when the Netherlands, Flanders, and Bohemia were possibly the richest parts of the mainland continent.
This would be more simply done with a post-1900 POD with a Nazi victory. Unlikely that anyone would have the motive or ability to change the language of so many people otherwise, especially when the Netherlands, Flanders, and Bohemia were possibly the richest parts of the mainland continent.