Silesian language
Silesian, occasionally called Upper Silesian, is an ethnolect of the Lechitic group spoken in Upper Silesia. While having secured some international recognition as a language, there is a debate on whether Silesian is either a dialect of Polish or a distinct language, and if Silesians are either a regional ethnic group within the Polish nation or a distinct ethnic minority that historically emerged, but later diverged from, the Polish people.