Established on 28 April 1920 as the Azerbaijan SSR , from 12 March 1922 to 5 December 1936 , it was part of the Transcaucasian SFSR together with the Armenian SSR and the Georgian SSR .
It was founded on April 28 , 1920 as the Azerbaijan SSR . From March 12 , 1922 to December 5 , 1936 , it was part of the Transcaucasian SFSR together with the Armenian SSR and the Georgian SSR .