<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> Armenia (/ ɑːr ˈmiːniə / (listen), / - ˈmiːnjə /; Armenian: Հայաստան, tr . Hayastan, IPA: (hɑjɑsˈtɑn); Russian: Армения; Armeniya), officially the Armenian Soviet Socialist Republic; (Armenian SSR; Armenian: Հայկական Սովետական Սոցիալիստական Հանրապետություն Haykakan Sovetakan Soc'ialistakan Hanrapetut'yun; Russian: Армя́нская Сове́тская Социалисти́ческая Респу́блика Armyanskaya Sovetskaya Sotsialističeskaya Respublika), also commonly referred to as Soviet Armenia was one of the constituent republics of the Soviet Union in December 1922 located in the South Caucasus region of Eurasia . It was established in December 1920, when the Soviets took over control of the short - lived First Republic of Armenia and lasted until 1991 . It is sometimes called the Second Republic of Armenia, following the First Republic of Armenia's demise . </P> <P> As part of the Soviet Union, the Armenian SSR transformed from a largely agricultural hinterland to an important industrial production center, while its population almost quadrupled from around 880,000 in 1926 to 3.3 million in 1989 due to natural growth and large - scale influx of Armenian Genocide survivors and their descendants . On August 23, 1990, it was renamed the Republic of Armenia after its sovereignty was declared, but remained in the Soviet Union until its official proclamation of independence on 21 September 1991 . Its independence was recognized on 26 December 1991 when the Soviet Union ceased to exist . After the dissolution of the Soviet Union, the state of the post-Union Republic of Armenia existed until the adoption of the new constitution in 1995 . </P>

When did armenia became part of the soviet union
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