After the Red Army invasion of Georgia, Abkhazia, hitherto an autonomous province within the Democratic Republic of Georgia, was declared a Soviet Republic, the SSR of Abkhazia, in March 1921 by the Abkhaz Revolutionary committee. However the republic's relations with Georgia and Russia were not formally settled. On December 16, 1921, Abkhazia signed a treaty of alliance with the Georgian SSR, which defined its status as a "treaty republic" (Russian: договорная республика) and established a military, political and financial union between the two Soviet republics, subordinating the SSR of Abkhazia to the Georgian SSR. Thus, through Georgia, Abkhazia joined the TSFSR and was initially on an equal footing with the other republics of the federation. On February 19, 1931, Abkhazia's republican status was downgraded to that of an Autonomous Soviet Socialist Republic within the Georgian SSR.