Working with a POD after 1618, would it be plausible for the Hohenzollerns to successfully jockey for secession of Brandenburg from the HRE à la Switzerland, as opposed to elevating Prussia into a kingdom?
What sort of POD would be required for this happen? Is it even possible? Is it just going to result in the rest of the Empire stomping on Brandenburg until there's nothing left to stomp?
What sort of POD would be required for this happen? Is it even possible? Is it just going to result in the rest of the Empire stomping on Brandenburg until there's nothing left to stomp?