I‘ve heard about an Austrian ethnologist/linguist cleric called Wilhelm Schmidt, who proposed something like that as part of a federalization plan for Austria-Hungary, but it never gained any traction. I haven‘t found much info in it.
Your mission is to find a way to do what I’ve described in the title before WW1.
Good luck!
Your mission is to find a way to do what I’ve described in the title before WW1.
Good luck!