>>507885592
Pic related are the language groups so far. Looks like Germanisation hasn’t spread too far east beyond some tentacles Silesia and the Baltics.
Also bear in mind that each province will have a percentage breakdown of culture and a population. Going to war and losing men will literally drain your country’s population.
It’ll be interesting to see if you can cheese this mechanic to effectively genocide targetted ethnic groups by raising levvies in minority ethnic provinces and getting them stack wiped.