Rusyns, also known as Carpatho-Rusyns or Ruthenes (Rusyn: Русины Rusyny; also sometimes referred to as Carpatho-Russians or Rusnaks), are a primarily diasporic ethnic group who speak an East Slavic language, known as Rusyn. Carpatho-Rusyns descend from Ruthenians who did not adopt the use of the ethnonym "Ukrainian" in the early 20th century. The use of the term Rusyn was prohibited by some governments, as seen after 1945 in Soviet Transcarpathia, Poland, and Czechoslovakia.