Transcaucasian Socialist Federative Soviet Republic in the context of "Soviet Ukraine"

The Ukrainian Soviet Socialist Republic, abbreviated as the Ukrainian SSR, UkrSSR, and also known as Soviet Ukraine or just Ukraine, was one of the constituent republics of the Soviet Union from 1922 until 1991. Under the Soviet one-party model, the Ukrainian SSR was governed by the Communist Party of the Soviet Union through its republican branch, the Communist Party of Ukraine.

The first iterations of the Ukrainian SSR were established during the Russian Revolution, particularly after the Bolshevik Revolution. The outbreak of the Ukrainian–Soviet War in the former Russian Empire saw the Bolsheviks defeat the independent Ukrainian People's Republic, during the conflict against which they founded the Ukrainian People's Republic of Soviets, which was governed by the Russian Soviet Federative Socialist Republic (RSFSR), in December 1917; it was later succeeded by the Ukrainian Soviet Republic in 1918. Simultaneously with the Russian Civil War, the Ukrainian War of Independence was being fought among the different Ukrainian republics founded by Ukrainian nationalists, Ukrainian anarchists, and Ukrainian separatists – primarily against Soviet Russia and the Ukrainian SSR, with either help or opposition from neighbouring states. In 1922, it was one of four Soviet republics (with the Russian SFSR, the Byelorussian SSR, and the Transcaucasian SFSR) that signed the Treaty on the Creation of the Soviet Union. As a Soviet quasi-state, the Ukrainian SSR became a founding member of the United Nations in 1945 alongside the Byelorussian SSR, in spite of the fact that they were also legally represented by the Soviet Union in foreign affairs. Upon the dissolution of the Soviet Union in 1991, the Ukrainian SSR emerged as the present-day independent state of Ukraine, although the modified Soviet-era constitution remained in use until the adoption of the modern Ukrainian constitution in June 1996.

In the Soviet Union, a Union Republic (Russian: Сою́зная Респу́блика, romanized: Soyúznaya Respúblika) or unofficially a Republic of the USSR was a constituent federated political entity with a system of government called a Soviet republic, which was officially defined in the 1977 constitution as "a sovereign Soviet socialist state which has united with the other Soviet republics to form the Union of Soviet Socialist Republics" and whose sovereignty is limited by membership in the Union. As a result of its status as a sovereign state, the Union Republic de jure had the right to enter into relations with foreign states, conclude treaties with them and exchange diplomatic and consular representatives and participate in the activities of international organizations (including membership in international organizations). The Union Republics were perceived as national-based administrative units of the Union of Soviet Socialist Republics (USSR).

The Soviet Union was formed in 1922 by a treaty between the Soviet republics of Byelorussia, Russian SFSR (RSFSR), Transcaucasian Federation, and Ukraine, by which they became its constituent republics of the Union of Soviet Socialist Republics (Soviet Union). For most of its history, the USSR was a one-party state led by the Communist Party of the Soviet Union. Key functions of the USSR were highly centralized in Moscow until its final years, despite its nominal structure as a federation of republics; the light decentralization reforms during the era of perestroika (reconstruction) and glasnost (voice-ness, as in freedom of speech) conducted by Mikhail Gorbachev as part of the Helsinki Accords are cited as one of the factors which led to the dissolution of the USSR in 1991 as a result of the Cold War and the creation of the Commonwealth of Independent States.

The Declaration and Treaty on the Formation of the Union of Soviet Socialist Republics (Russian: Декларация и договор об образовании Союза Советских Социалистических Республик) officially created the Union of Soviet Socialist Republics (USSR), commonly known as the Soviet Union. It de jure legalised a political union of several Soviet republics that had existed since 1919 and created a new federal government whose key functions were centralised in Moscow. Its legislative branch consisted of the Congress of Soviets of the Soviet Union and the Central Executive Committee of the Soviet Union (TsIK), while the Council of People's Commissars composed the executive.

The Treaty, along with the Declaration of the Creation of the USSR was approved 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 First All-Union Congress of Soviets and signed by heads of delegations – Mikhail Kalinin, Mikhail Tskhakaya, and Grigory Petrovsky, Alexander 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 (or six, depending on whether 1922 or 1940 definitions are applied) republics to 16 republics.

The Agreement on the creation of the Commonwealth of Independent States (officially), or unofficially the Minsk Agreement and best known as the Belovezha Accords, is the agreement declaring that the Soviet Union (USSR) had effectively ceased to exist and establishing the Commonwealth of Independent States (CIS) in its place as an organization created by the same Union Republics. The documentation was signed at the state dacha near Viskuli in Belovezhskaya Pushcha, Belarus on 8 December 1991, by leaders of three of the four republics (except for the defunct Transcaucasian SFSR) which had signed the 1922 Treaty on the Creation of the USSR:

• Belarusian Parliament chairman Stanislav Shushkevich and Prime Minister of Belarus Vyacheslav Kebich
• Russian president Boris Yeltsin and First Deputy Prime Minister of the RSFSR/Russian Federation Gennady Burbulis
• Ukrainian president Leonid Kravchuk and Ukrainian prime minister Vitold Fokin

As Shushkevich said in 2006, by December "the union had already been broken up by the putschists" who in August 1991 tried to remove Mikhail Gorbachev from power to prevent the transformation of the Soviet Union into what Shushkevich described as "a confederation". The three wanted to avoid what happened in the breakup of Yugoslavia and "there was no other way out of the situation than a divorce."

The Armenian Soviet Socialist Republic (ArSSR), also known as Soviet Armenia, or simply Armenia, was one of the constituent republics of the Soviet Union, located in the Caucasus region of Eurasia. Soviet Armenia bordered the Soviet republics of Azerbaijan and Georgia and the independent states of Iran and Turkey. The capital of the republic was Yerevan, and it contained 37 districts (raions). Other major cities in the Armenian SSR included Leninakan, Kirovakan, Hrazdan, Ejmiatsin, and Kapan. The republic was governed by Communist Party of Armenia, a branch of the Communist Party of the Soviet Union.

Soviet Armenia was established on 29 November 1920, with the Sovietisation of the short-lived First Republic of Armenia. Consequently, historians refer to it as the Second Republic of Armenia. It became part of the Transcaucasian Socialist Federative Soviet Republic (TSFSR) along with neighboring Georgia and Azerbaijan, which comprised one of the four founding republics of the Soviet Union. When the TSFSR was dissolved in 1936, Armenia became a constituent republic of the Soviet Union.

The Azerbaijan Soviet Socialist Republic, also referred to as the Azerbaijani Soviet Socialist Republic, Azerbaijan SSR, Azerbaijani SSR, AzSSR, Soviet Azerbaijan or simply Azerbaijan, was one of the constituent republics of the Soviet Union between 1922 and 1991. Azerbaijan SSR was created on 28 April 1920 following the Red Army invasion of Azerbaijan. When the Russian Soviet Federative Socialist Republic brought pro-Soviet figures to power in the region, the first two years of the Azerbaijani SSR were as an independent country until incorporation into the Transcaucasian SFSR, along with the Armenian SSR and the Georgian SSR.

In December 1922, the Transcaucasian SFSR became part of the newly established Soviet Union. The Constitution of Azerbaijan SSR was approved by the 9th Extraordinary All-Azerbaijani Congress of Soviets on 14 March 1937. On 5 February 1991, Azerbaijan SSR was renamed the Republic of Azerbaijan according to the Decision No.16-XII of Supreme Soviet of Azerbaijan approving the Decree of the President of Azerbaijan SSR dated 29 November 1990, remained in the USSR for the period before the declaration of independence in October 1991. The Constitution of the Azerbaijan SSR ceased to exist in 1995, upon the adoption of the new Constitution of Azerbaijan.