Soviet Union
1922–1991 country spanning Eurasia / From Wikipedia, the free encyclopedia
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The Soviet Union,[lower-alpha 18] officially the Union of Soviet Socialist Republics[lower-alpha 19] (USSR),[lower-alpha 20] was a transcontinental country that spanned much of Eurasia from 1922 to 1991. It was a successor state to the Russian Empire that was nominally organized as a federal union of fifteen national republics, the largest and most populous of which was the Russian SFSR;[lower-alpha 21] in practice both its government and economy were highly centralized until its final years. As a one-party state governed by the Communist Party of the Soviet Union, it was a flagship communist state.
Union of Soviet Socialist Republics | |
|---|---|
| 1922–1991 | |
 Flag
(1955–1991)  State Emblem
(1956–1991) | |
| Motto: Пролетарии всех стран, соединяйтесь! "Workers of the world, unite!" | |
| Anthem: Интернационал "The Internationale" (1922–1944) Государственный гимн СССР[lower-alpha 1] "State Anthem of the Soviet Union" (1944–1991) | |
.svg) The Soviet Union during the Cold War | |
| Capital and largest city | Moscow 55°45′N 37°37′E |
| Official languages | Russian[lower-alpha 2] |
| Recognised regional languages | |
| Ethnic groups (1989) | 70% East Slavs 17% Turkic 13% other |
| Religion | Secular state (de jure) State atheism (de facto) |
| Demonym(s) | Soviet |
| Government | See: Government of the Soviet Union |
| CPSU Leader | |
• 1922–1924 | Vladimir Lenin[lower-alpha 3] |
• 1924–1953 | Joseph Stalin[lower-alpha 4] |
• 1953[lower-alpha 5] | Georgy Malenkov[lower-alpha 6] |
• 1953–1964 | Nikita Khrushchev[lower-alpha 7] |
• 1964–1982 | Leonid Brezhnev[lower-alpha 8] |
• 1982–1984 | Yuri Andropov |
• 1984–1985 | Konstantin Chernenko |
• 1985–1991 | Mikhail Gorbachev[lower-alpha 9] |
| Head of State | |
• 1922–1946 (first) | Mikhail Kalinin[lower-alpha 10] |
• 1988–1991 (last) | Mikhail Gorbachev[lower-alpha 11] |
| Premier | |
• 1922–1924 (first) | Vladimir Lenin[lower-alpha 12] |
• 1991 (last) | Ivan Silayev[lower-alpha 13] |
| Legislature | Congress of Soviets (1922–1936)[lower-alpha 14] Supreme Soviet (1936–1991) |
| Soviet of Nationalities (1936–1991) Soviet of Republics (1991) | |
| Soviet of the Union (1936–1991) | |
| Historical era | |
| 7 November 1917 | |
| 30 December 1922 | |
• End of the Civil War | 16 June 1923 |
| 31 January 1924 | |
| 5 December 1936 | |
| 1939–1940 | |
| 1941–1945 | |
| 24 October 1945 | |
| 25 February 1956 | |
| 9 October 1977 | |
| 11 March 1990 | |
| 19–22 August 1991 | |
| 8 December 1991[lower-alpha 15] | |
| 26 December 1991[lower-alpha 16] | |
| Area | |
• Total | 22,402,200 km2 (8,649,500 sq mi) (1st) |
• Water | 2,767,198 km2 (1,068,421 sq mi) |
• Water (%) | 12.3 |
| Population | |
 286,730,819[2] (3rd) | |
• Density | 12.7/km2 (32.9/sq mi) |
| GDP (PPP) | 1990 estimate |
• Total | $2.7 trillion (2nd) |
• Per capita | $9,000 |
| GDP (nominal) | 1990 estimate |
• Total | $2.7 trillion[3] (2nd) |
• Per capita | $9,000 (28th) |
| Gini (1989) | 0.275 low |
| HDI (1990 formula) | 0.920[4] very high |
| Currency | Soviet ruble (Rbl) (SUR) |
| Time zone | (UTC+2 to +12) |
| Driving side | right |
| Calling code | +7 |
| ISO 3166 code | SU |
| Internet TLD | .su[lower-alpha 17] |
The Soviet Union's roots lay in the October Revolution of 1917, which saw the Bolsheviks overthrow the Russian Provisional Government that formed earlier that year following the February Revolution that had dissolved the Russian Empire. The new government, led by Vladimir Lenin, established the Russian Soviet Federative Socialist Republic (RSFSR),[lower-alpha 22] the world's first constitutionally socialist state. The revolution was not accepted by all within the Russian Republic, resulting in the Russian Civil War between the Bolsheviks and the anti-communist Whites. As the war progressed in the Bolsheviks' favor, the RSFSR began to incorporate land acquired from the war into various puppet states, which were merged into the Soviet Union in December 1922. Following Lenin's death in 1924, Joseph Stalin came to power, inaugurating a period of rapid industrialization and forced collectivization that led to significant economic growth, but also contributed to a famine in 1930 to 1933 that killed millions. The forced labour camp system of the Gulag was also expanded in this period. During the late 1930s, Stalin conducted the Great Purge to remove actual and perceived opponents, resulting in mass death, imprisonment, and deportation. In 1939, the USSR and Nazi Germany signed a nonaggression pact despite their ideological incongruence; nonetheless, in 1941, Nazi Germany invaded the Soviet Union in the largest land invasion in history, opening the Eastern Front of World War II. The Soviets played a decisive role in defeating the Axis powers in 1945, suffering an estimated 27 million casualties, which accounted for the majority of Allied losses. In the aftermath of the war, the Soviet Union consolidated the territory occupied by the Red Army, forming various satellite states, and undertook rapid economic development which cemented its status as a superpower.
Following World War II, ideological tensions with the United States eventually led to the Cold War. The American-led Western Bloc coalesced into NATO in 1949, prompting the Soviet Union to form its own military alliance, commonly known as the Warsaw Pact, in 1955. Neither side ever engaged in direct military confrontation, and instead fought on an ideological basis and through proxy wars. In 1953, following Stalin's death, the Soviet Union undertook a campaign of de-Stalinization under the leadership of Nikita Khrushchev, which saw reversals and rejections of Stalinist policies. This campaign caused tensions with Communist China. During the 1950s, the Soviet Union rapidly expanded its efforts in space exploration and took an early lead in the Space Race with the first artificial satellite, the first human spaceflight, the first space station, and the first probe to land on another planet (Venus). The Cuban Missile Crisis of October 1962 was the closest the Cold War came to escalating into full-scale nuclear war.
The 1970s saw a brief détente in the Soviet Union's relationship with the United States, but tensions emerged again following the Soviet invasion of Afghanistan in 1979. In the mid-1980s, the last Soviet leader, Mikhail Gorbachev, sought to reform the country through his policies of glasnost and perestroika. In 1989, various countries of the Warsaw Pact overthrew their Soviet-backed regimes, and nationalist and separatist movements erupted across the entire Soviet Union. In 1991, amid efforts to reform and preserve the country as a renewed federation, an attempted coup d'état against Gorbachev by hardline communists prompted the three most populous and economically developed republics—Ukraine, Russia, and Belarus—to secede from the Union. On December 26, Gorbachev officially recognized the dissolution of the Soviet Union. Boris Yeltsin, the leader of the RSFSR, oversaw its reconstitution into the Russian Federation, which became the Soviet Union's successor state; all other republics emerged as fully independent post-Soviet states.
During its existence, the Soviet Union produced many significant social and technological achievements and innovations. It had the world's second-largest economy and largest standing military. An NPT-designated state, it housed the largest arsenal of nuclear weapons in the world. As an Allied nation, it was a founding member of the United Nations as well as one of the five permanent members of the United Nations Security Council. Before its dissolution, the USSR was one of the world's two superpowers through its hegemony in Eastern Europe, global diplomatic and ideological influence (particularly in the Global South), military and economic strengths, and scientific accomplishments.