Poland

https://www.hellenicaworld.com/Poland/Poland.html

16 voivodships [provinces] (wojewodztwa, singular - wojewodztwo); Dolnoslaskie (Lower Silesia), Kujawsko-Pomorskie (Kuyavia-Pomerania), Lodzkie (Lodz), Lubelskie (Lublin), Lubuski
World Library, Michael Lahanas

Why Belgium Is an Artificial State. And the United Kingdom, Switzerland (and Even Austria-Hungary) Are Not | The Brussels Journal

https://www.brusselsjournal.com/node/2369

of public life. Some provinces of multilingual states may be unilingual, which means that in these provinces the authorities use only one national language; some provinces may be

That's everything I could find.
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