EXTRACT FROM THE TREATY on establishment of the Union of the Soviet Socialist Republics

The Soviet Socialist Federative Republic of Russia (RSFSR), the Soviet Socialist Republic of Ukraine (USSR), Soviet Socialist Republic of Byelorussia (BSSR) and the Soviet Socialist Federative Republic of the Trans-Caucasus (TCSFSR – Georgia, Azerbaijan and Armenia) conclude this Treaty on unification within one Union State – the Union of Soviet Socialist Republics on the following bases:

(…)

30 December 1922

(Constitution and Constitutional Acts of the USSR (1922-1936). The Collection of Documents. Moscow, 1940, p. 19-22/in Russian)