The article analyzes the prerequisites of self-determination and sovereignty of Tuva in 1921. Briefly, the general context of events is revealed, the main episodes and key personalities are listed. Using historical-genetic, comparative-historical and problem-chronological methods, the positions of Mongolia and Soviet Russia and their relationship on the status of Tuva, the organization and convocation of the All-Tuva Constituent Khural, which proclaimed the independence of Tuva, as well as the consequences of the declaration of independence of Tuva, were reconstructed. The role of the authorized representative of the Sibrevkom in Uryanhai I.G. Safyanov in this process is shown. In conclusion, the authors conclude that the emergence of a sovereign Tuva state was made possible both due to the contradictory political situation in Asia and due to the role of I.G. Safyanov in history. Since 1921, Tuva began to live and develop in the political and economic conditions created by the Constituent Khural.