During the early Soviet period, the term "Transcaucasian Tatars" was supplanted by "Azerbaijani Turks" and ultimately "Azerbaijanis". For some time afterwards, the term "Azerbaijanis" was then applied to all Turkic-speaking Muslims in Transcaucasia, from the Meskhetian Turks in southwestern Georgia, to the Terekemes of southern Dagestan, as well as assimilated Tats and Talysh. The temporary designation of Meskhetian Turks as "Azerbaijanis" was most likely related to the existing administrative framework of the Transcaucasian SFSR, as the Azerbaijan SSR was one of its founding members. After the establishment of the Azerbaijan SSR, on the order of Soviet leader Stalin, the "name of the formal language" of the Azerbaijan SSR was also "changed from Turkic to Azerbaijani".