The first lower-level subdivision to declare independence was the
Nakhichevan Autonomous Soviet Socialist Republic on January 19, 1990, predating that of Lithuania by weeks. Following the proposal of
New Union Treaty by Gorbachev during the
Communist Party Congress in July 1990, most of autonomous republics expressed the desire to be a party to the new treaty and declared sovereignty. The effort was ultimately futile due to the
August Coup.
Russian SFSR As most autonomous republics and oblasts self-declared promotion to Soviet Socialist Republics, Art. 71 and 72 of the
Constitution of the RSFSR were amended on May 24, 1991 to recognize its autonomous republics as SSRs; it was further amended on July 3 to promote all its autonomous oblasts other than the
Jewish Autonomous Oblast to SSRs. All of them other than Tatarstan and the self-proclaimed
Chechen Republic (Nokhchi-cho) in the
defunct Checheno-Ingushetia agreed to sign the
Treaty of Federation on 31 March 1992 and became
republics of Russia. The self-proclaimed Yamalo-Nenets Republic gave up the claim and resumed the status of an autonomous okrug. While the
Mordovian ASSR and
Dagestan ASSR self-declared promotion to SSRs on and respectively, they did not proclaim state sovereignty. On August 15, 1990, the
Khakas Autonomous Oblast adopted a resolution to transform the region into an ASSR and submitted a corresponding petition to the
Supreme Soviet of the RSFSR. On November 30, 1990, the
Karachay-Cherkess Autonomous Oblast self-declared promotion to an SSR. From 1990 to 1991, there were attempts to split the region on an ethnic basis as the congresses of representatives of local nationalities proclaimed the Karachay Republic, the Republic of Cherkessia, the Abazin Republic, and the Upper Kuban Cossack Republic. In March 1992, a referendum was held in which the majority of the population spoke out against the division.
Karachay-Cherkessia signed the Treaty of Federation on 31 March 1992.
Other republics All autonomous units outside the Russian SFSR other than
Adjarian ASSR declared sovereignty at some point. While some were reintegrated into the post-Soviet republic they were in peacefully relatively soon after, most in the
South Caucasus region turned into
long-time breakaways states. == Other entities ==