Treaty on the Creation of the USSR on 30 December 1922 by a conference of delegations from the Russian SFSR, the Transcaucasian SFSR, the Ukrainian SSR and the Byelorussian SSR. The Treaty and the Declaration were confirmed by the 1st Congress of Soviets of the USSR and signed by heads of delegations Mikhail Kalinin, Mikhail Tskhakaya, Mikhail Frunze and Grigory Petrovsky, Aleksandr Chervyakov respectively on December 30, 1922. The treaty provided flexibility to admit new members. Therefore, by 1940 the Soviet Union grew from the founding four republics to 15 republics. On 8 December 1991, Russian, Ukrainian and Belarusian Presidents signed the Belavezha Accords. The agreement declared
USSR in Construction number of issues, as did Alexander Rodchenko and his wife, Varvara Stepanova. "USSR in Construction" first appeared not long after Stalin's denunciations of Constructivism as a bourgeois art form and the official proclamation of socialist realism as the only acceptable style of art. Many avant-garde artists thus turned to photomontage as an alternative mode of expression which could side-step around the rigid restrictions being put on painting. The last issue of the journal was published in December 1949. The magazine was succeeded by another one, "Soviet Union", which was launched in March 1950. USSR in Construction USSR in Construction ()