Union of Soviet Socialist Republics in the context of Economy of the Soviet Union

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 Autonomous Republic of Crimea is a de jure administrative division of Ukraine encompassing most of Crimea that was unilaterally annexed by Russia in 2014. The Autonomous Republic of Crimea occupies most of the peninsula, while the City of Sevastopol (a city with special status within Ukraine) occupies the rest.

The Cimmerians, Scythians, Greeks, Goths, Huns, Bulgars, Khazars, Byzantine Greeks, the state of Kievan Rus', Kipchaks, Italians, and Golden Horde Mongols and Tatars each controlled Crimea in its earlier history. In the 13th century, it was partly controlled by the Venetians and by the Genoese, and in the late 15th century, it was partly under Polish suzerainty. They were followed by the Crimean Khanate and the Ottoman Empire in the 15th to 18th centuries, the Russian Empire in the 18th to 20th centuries, Germany during World War II, and the Russian Soviet Federative Socialist Republic, and later the Ukrainian Soviet Socialist Republic, within the Soviet Union during the rest of the 20th century until Crimea became part of independent Ukraine with the breakup of the Soviet Union in 1991.

Marxism–Leninism (Russian: марксизм-ленинизм, romanized: marksizm-leninizm) is a communist ideology that became the largest faction of the communist movement in the world in the years following the October Revolution. It was the predominant ideology of most communist governments throughout the 20th century. It was developed in the Union of Soviet Socialist Republics by Joseph Stalin and drew on elements of Bolshevism, Leninism, and Marxism. It was the state ideology of the Soviet Union, Soviet satellite states in the Eastern Bloc, and various countries in the Non-Aligned Movement and Third World during the Cold War, as well as the Communist International after Bolshevization.

Today, Marxism–Leninism is the de jure ideology of the ruling parties of China, Cuba, Laos, and Vietnam, as well as many other communist parties. The state ideology of North Korea is derived from Marxism–Leninism, although its evolution is disputed.

The Premier of the Soviet Union (Russian: Глава Правительства СССР) was the head of government of the Union of Soviet Socialist Republics (USSR). From 1923 to 1946, the name of the office was Chairman of the Council of People's Commissars, and from 1946 to 1991 its name was Chairman of the Council of Ministers. During the dissolution of the Soviet Union in 1991, its name was briefly Prime Minister and later Chairman of the Committee on the Operational Management of the Soviet Economy. The first Soviet premier was the country's founder and first leader, Vladimir Lenin. After General Secretary of the Communist Party Joseph Stalin rose to power in 1924, the de facto leader of the Soviet Union typically was the party's General Secretary, with Stalin and his successor Nikita Khrushchev also serving as premier. Twelve individuals held the post.

The Presidium of the Supreme Soviet (Russian: Президиум Верховного Совета, romanized: Prezidium Verkhovnogo Soveta) was the standing organ of the highest body of state authority in the Union of Soviet Socialist Republics (USSR). The presidium was elected by joint session of both houses of the Supreme Soviet to act on its behalf while the Supreme Soviet was not in session. By the 1936 and 1977 Soviet Constitution, the Presidium of the Supreme Soviet served as the collective head of state of the USSR. In all its activities, the Presidium was accountable to the Supreme Soviet of the USSR.

Beside the all-Union body they were also in all union republics (e.g.: Presidium of the Supreme Soviet of the Russian SFSR, Presidium of the Ukrainian SSR, etc.) and other regions including autonomous republics. Structure and functions of the presidiums in these republics were virtually identical.

In the Union of Soviet Socialist Republics (USSR), national delimitation was the process of specifying well-defined national territorial units (Soviet socialist republics [SSR], autonomous Soviet socialist republics [ASSR], autonomous oblasts [provinces], raions [districts] and okrugs [circuits]) from the ethnic diversity of the USSR and its subregions.

The Russian-language term for this Soviet state policy was razmezhevanie (Russian: национально-территориальное размежевание, natsionalno-territorialnoye razmezhevaniye), which is variously translated in English-language literature as "national-territorial delimitation" (NTD), "demarcation", or "partition". National delimitation formed part of a broader process of changes in administrative-territorial division, which also changed the boundaries of territorial units, but was not necessarily linked to national or ethnic considerations.

The first five-year plan (Russian: I пятилетний план, первая пятилетка, romanized: I pyatiletniy plan, pervaya pyatiletka) of the Union of Soviet Socialist Republics (USSR) was a list of economic goals, implemented by Communist Party General Secretary Joseph Stalin, based on his policy of socialism in one country. Leon Trotsky had delivered a joint report to the April Plenum of the Central Committee in 1926 which proposed a program for national industrialisation and the replacement of annual plans with five-year plans. His proposals were rejected by the Central Committee majority which was controlled by the troika and derided by Stalin at the time. Stalin's version of the five-year plan was implemented in 1928 and took effect until 1932.

The Soviet Union entered a series of five-year plans which began in 1928 under the rule of Joseph Stalin. Stalin launched what would later be referred to as a "revolution from above" to improve the Soviet Union's domestic policy. The policies were centered around rapid industrialization and the collectivization of agriculture. Stalin desired to remove and replace the mixed-economy policies of the New Economic Policy. Some scholars have argued that the programme of mass industrialisation advocated by Leon Trotsky and the Left Opposition was co-opted after Trotsky's exile to serve as the basis of Stalin's first five-year plan. According to historian Sheila Fitzpatrick, the scholarly consensus was that Stalin appropriated the position of the Left Opposition on such matters as industrialisation and collectivisation.

The Albanian–Soviet split (Russian: Албано-советский раскол, romanized: Albano-sovetskiy raskol; Albanian: Ndarja shqiptaro-sovjetike) was the gradual worsening of relations between the Union of Soviet Socialist Republics (USSR) and the People's Republic of Albania, which occurred in the 1956–1961 period as a result of Soviet leader Nikita Khrushchev's rapprochement with Yugoslavia along with his "Secret Speech" and subsequent de-Stalinization, including efforts to extend these policies into Albania as was occurring in other Eastern Bloc states at the time.

However, the Albanian–Soviet split did not become public until 1960, when, during the Bucharest Conference of Representatives of Communist and Workers Parties, the Albanian delegation, led by Hysni Kapo, did not support Khrushchev's ideological views on the Sino-Soviet split.

The Soviet of Nationalities was the upper chamber of the Supreme Soviet of the Union of Soviet Socialist Republics, elected on the basis of universal, equal and direct suffrage in accordance with the principles of Soviet democracy. Until democratization in the late-1980s, however, only a single candidate nominated by the Communist Party of the Soviet Union was permitted to stand for election in each constituency. It was briefly succeeded by the Soviet of the Republics from October to December 1991. As opposed to the Soviet of the Union, the Soviet of Nationalities was composed of the nationalities of the Soviet Union, which in turn followed administrative division rather than being a representation of ethnic groups.
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The Constitution of the Soviet Union recognised the Presidium of the Supreme Soviet (between 1938 and 1989) and the earlier Central Executive Committee (CEC) of the Congress of Soviets (between 1922 and 1938) as the highest organs of state authority in the Union of Soviet Socialist Republics (USSR) between legislative sessions. Under the 1924, 1936 and 1977 Soviet Constitutions these bodies served as the collective head of state of the Soviet Union. The chairman of these bodies personally performed the largely ceremonial functions assigned to a single head of state but was provided little real power by the constitution.

The Soviet Union was established in 1922. However, the country's first constitution was only adopted in 1924. Before that time, the 1918 Constitution of the Russian Soviet Federative Socialist Republic functioned as the constitution of the USSR. According to the 1918 Constitution, the All-Russian Central Executive Committee (CEC), whose chairman was head of state, had the power to determine what matters of income and taxation would go to the state budget and what would go to the local soviets. The CEC could also limit taxes. In periods between convocations of the Congress of Soviets the CEC held supreme power. In between sessions of the Congress of Soviets the CEC was responsible for all the affairs of the Congress of Soviets. The CEC and the Congress of Soviets was replaced by the Presidium and the Supreme Soviet respectively by several amendments to the 1936 Constitution in 1938.

The Supreme Soviet (Russian: Верховный Совет, romanized: Verkhovny Sovet, lit. 'Supreme Council') was the common name for the highest organs of state authority of the Soviet socialist republics (SSR) in the Union of Soviet Socialist Republics (USSR). These soviets were modeled after the Supreme Soviet of the USSR, established in 1938, and were nearly identical.

Party-approved delegates to the Supreme Soviets were periodically elected unopposed in show elections. The first free or semi-free elections took place during perestroika in late 1980s, in which Supreme Soviets themselves were no longer directly elected. Instead, Supreme Soviets were appointed by directly elected Congresses of People's Deputies based somewhat on the Congresses of Soviets that preceded the Supreme Soviets. The soviets until then were largely rubber-stamp institutions, approving decisions handed to them by the Communist Party of the USSR or of each SSR.

The history of the Soviet Union from 1964 to 1982, referred to as the Brezhnev Era, covers the period of Leonid Brezhnev's rule of the Union of Soviet Socialist Republics (USSR). This period began with high economic growth and soaring prosperity, but gradually significant problems in social, political, and economic areas accumulated, so that the period is often described as the Era of Stagnation. In the 1970s, the Soviet Union and the United States both took a stance of "detente". The goal of this strategy was to warm up relations, in the hope that the Soviet Union would pursue economic and democratic reforms. However, this did not come until Mikhail Gorbachev took office in 1985.

Nikita Khrushchev was ousted as First Secretary of the Central Committee of the Communist Party of the Soviet Union (as well as Chairman of the Council of Ministers) on 14 October 1964, due to his failed reforms and the disregard for Party and Government institutions. Brezhnev replaced Khrushchev as First Secretary and Alexei Kosygin replaced him as Chairman of the Council of Ministers. Anastas Mikoyan, and later Nikolai Podgorny, became Chairmen of the Presidium of the Supreme Soviet. Together with Andrei Kirilenko as organizational secretary, and Mikhail Suslov as Chief Ideologue, they made up a reinvigorated collective leadership, which contrasted in form with the autocracy that characterized Khrushchev's rule.

The Council of Ministers of the Union of Soviet Socialist Republics (Russian: Совет министров СССР, romanized: Sovet Ministrov SSSR, IPA: [sɐˈvʲet mʲɪˈnʲistrəf ˌɛsˌɛsˌɛsˈɛr]) was the highest executive and administrative organ of state authority of the Union of Soviet Socialist Republics (USSR) from 1946 until 1991.

During 1946 the Council of People's Commissars was reorganized as the Council of Ministers. Accordingly, the People's Commissariats were renamed as Ministries. The council issued declarations and instructions based on and in accordance with applicable laws, which had obligatory jurisdictional power in all republics of the Union. However, the most important decisions were made by joint declarations with the Central Committee of the Communist Party of Soviet Union (CPSU), which was de facto more powerful than the Council of Ministers. During 1991 the Council of Ministers was dissolved, and replaced by the newly established "Cabinet of Ministers", which itself disappeared only months later when the USSR was disbanded.