| Part of the World War I and the Revolutions of 1917–1923 | |
 Map of Europe in 1919 | |
| Date | 8 March 1917 – 30 December 1922 (5 years, 9 month, and 22 days) |
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| Location | All-Russian Empire
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The Russian Empire, also known as Russia, disintegrated as a combined effect of the Russian Revolution which started in 1917 and the abdication of Nicholas II, the defeat of Russia in World War I, and the Russian Civil War.
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The October Revolution, also known as the Great October Socialist Revolution, October coup, or Bolshevik coup was a revolution in Russia led by the Bolshevik Party of Vladimir Lenin that was a key moment in the larger Russian Revolution of 1917–1923. It was the second revolutionary change of government in Russia in 1917. It took place through an armed insurrection in Petrograd on 7 November 1917 [O.S. 25 October]. It was the precipitating event of the Russian Civil War.
The Russian Revolution was a period of political and social change in the Russian Empire, starting in 1917. This period saw Russia abolish its monarchy and adopt a socialist form of government following two successive revolutions and a bloody civil war. The Russian Revolution can also be seen as the precursor for the other European revolutions that occurred during or in the aftermath of World War I, such as the German Revolution of 1918–1919.
The Russian Civil War was a multi-party civil war in the former Russian Empire sparked by the overthrowing of the social-democratic Russian Provisional Government in the October Revolution, as many factions vied to determine Russia's political future. It resulted in the formation of the Russian Socialist Federative Soviet Republic and later the Soviet Union in most of its territory. Its finale marked the end of the Russian Revolution, which was one of the key events of the 20th century.
The Treaty of Brest-Litovsk was a separate peace treaty signed on 3 March 1918 between Soviet Russia and the Central Powers, by which Russia withdrew from World War I. The treaty, which followed months of negotiations after the armistice on the Eastern Front in December 1917, was signed at Brest-Litovsk.
A provisional government, also called an interim government, an emergency government, a transitional government or provisional leadership, is a temporary government formed to manage a period of transition, often following state collapse. Provisional governments are generally appointed, and frequently arise, either during or after civil or foreign wars, or during difficult times such as during invasion, economic crisis, or widespread infiltration of saboteurs and counter-revolutionaries such as during the French Revolution.
Wars of national liberation, also called wars of independence or wars of liberation, are conflicts fought by nations to gain independence. The term is used in conjunction with wars against foreign powers to establish separate sovereign states for the rebelling nationality. From a different point of view, such wars are called insurgencies or rebellions. Guerrilla warfare or asymmetric warfare is often utilized by groups labeled as national liberation movements, often with support from other states.
During the Polish–Soviet War of 1919–1921, Soviet Russia and its client state, Soviet Ukraine, were in combat with the re-established Second Polish Republic and the newly established Ukrainian People's Republic. Both sides aimed to secure territory in the often disputed areas of the Kresy, in the context of the fluidity of borders in Central and Eastern Europe in the aftermath of World War I and the breakdown of the Austrian, German, and Russian Empires. The first clashes between the two sides occurred in February 1919, but full-scale war did not break out until the following year. Especially at first, neither Soviet Russia, embroiled in the Russian Civil War, nor Poland, still in the early stages of state re-building, were in a position to formulate and pursue clear and consistent war aims.
The Finnish Socialist Workers' Republic (FSWR), more commonly referred to as Red Finland, was a self-proclaimed socialist state in Finland during the Finnish Civil War from January to May 1918.
The time period of around 1985–1991 marked the final period of the Cold War. It was characterized by systemic reform within the Soviet Union, the easing of geopolitical tensions between the Soviet-led bloc and the United States-led bloc, the collapse of the Soviet Union's influence in Eastern Europe, and the dissolution of the Soviet Union in 1991.
The Revolutions of 1989, also known as the Fall of Communism, was a revolutionary wave of liberal democracy movements that resulted in the collapse of most Marxist–Leninist governments in the Eastern Bloc and other parts of the world. Sometimes this revolutionary wave is also called the Fall of Nations or the Autumn of Nations, a play on the term Spring of Nations that is sometimes used to describe the Revolutions of 1848 in Europe. It may have contributed to the eventual dissolution of the Soviet Union—the world's largest Marxist–Leninist state—and the abandonment of communist regimes in many parts of the world, some of which were violently overthrown. The events, especially the fall of the Soviet Union, drastically altered the world's balance of power, marking the end of the Cold War and the beginning of the post-Cold War era.
The military history of Europe refers to the history of warfare on the European continent. From the beginning of the modern era to the second half of the 20th century, European militaries possessed a significant technological advantage, allowing its states to pursue policies of expansionism and colonization until the Cold War period. European militaries in between the fifteenth century and the modern period were able to conquer or subjugate almost every other nation in the world. Since the end of the Cold War, the European security environment has been characterized by structural dominance of the United States through its NATO commitments to the defense of Europe, as European states have sought to reap the 'peace dividend' occasioned by the end of the Cold War and reduce defense expenditures. European militaries now mostly undertake power projection missions outside the European continent. Recent military conflicts involving European nations include the 2001 War in Afghanistan, the 2003 War in Iraq, the 2011 NATO Campaign in Libya, and various other engagements in the Balkan and on the African continent. After 2014, the Russian annexation of Crimea and the ongoing Russo-Ukrainian War prompted renewed scholarly interest into European military affairs. For further the context see History of Europe.
A soviet republic, or council republic, is a republic in which the government is formed of soviets and politics are based on soviet democracy.
The background of the Winter War covers the period before the outbreak of the Winter War between Finland and the Soviet Union (1939–1940), which stretches from the Finnish Declaration of Independence in 1917 to the Soviet-Finnish negotiations in 1938–1939.
In many periodizations of human history, the late modern period followed the early modern period. It began around 1800 and, depending on the author, either ended with the beginning of contemporary history in 1945, or includes the contemporary history period to the present day.
The Russian Soviet Federative Socialist Republic, previously known as the Russian Soviet Republic and the Russian Socialist Federative Soviet Republic, as well as being unofficially referred to as Soviet Russia, the Russian Federation, or simply Russia, was an independent federal socialist state from 1917 to 1922, and afterwards the largest and most populous constituent republic of the Soviet Union (USSR) from 1922 to 1991, until becoming a sovereign part of the Soviet Union with priority of Russian laws over Union-level legislation in 1990 and 1991, the last two years of the existence of the USSR. The Russian SFSR was composed of sixteen smaller constituent units of autonomous republics, five autonomous oblasts, ten autonomous okrugs, six krais and forty oblasts. Russians formed the largest ethnic group. The capital of the Russian SFSR and the USSR as a whole was Moscow and the other major urban centers included Leningrad, Stalingrad, Novosibirsk, Sverdlovsk, Gorky and Kuybyshev. It was the first socialist state in the world.
The history of Soviet Russia and the Soviet Union (USSR) reflects a period of change for both Russia and the world. Though the terms "Soviet Russia" and "Soviet Union" often are synonymous in everyday speech, when referring to the foundations of the Soviet Union, "Soviet Russia" often specifically refers to brief period between the October Revolution of 1917 and the creation of the Soviet Union in 1922.
The Revolutions of 1917–1923 were a revolutionary wave that included political unrest and armed revolts around the world inspired by the success of the Russian Revolution and the disorder created by the aftermath of World War I. The uprisings were mainly socialist or anti-colonial in nature. Some socialist revolts failed to create lasting socialist states. The revolutions had lasting effects in shaping the future European political landscape, with for example the collapse of the German Empire and the dissolution of Austria-Hungary.
A revolutionary wave or revolutionary decade is one series of revolutions occurring in various locations within a similar time-span. In many cases, past revolutions and revolutionary waves have inspired current ones, or an initial revolution has inspired other concurrent "affiliate revolutions" with similar aims. The causes of revolutionary waves have become the subjects of study by historians and political philosophers, including Robert Roswell Palmer, Crane Brinton, Hannah Arendt, Eric Hoffer, and Jacques Godechot.
The Japan–Russia Secret Agreements were a series of four secret treaties signed between the Japanese Empire and the Russian Empire after the Russo-Japanese War, in order to secure and recognize the rights of both sides in areas of the East Asia, specifically the Korean Peninsula, Manchuria, and Mongolia. They were signed four times between 30 July 1907 and around 3 July 1916, and were abrogated by the Soviet government after the Russian Revolution in 1917.
