Title: Dates of establishment of diplomatic relations with the Soviet Union
Content:  The USSR was established on December 30, 1922 and existed until December 26, 1991.
Title: History of the Soviet Union
Content:  The history of Soviet Russia and the Soviet Union 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" properly refers to the few years between the October Revolution of 1917 and the creation of the Soviet Union in 1922. However, before 1922 the Soviet Union was multiple independent Soviet Republics, e.g. the RSFSR and Ukrainian SSR. At its peak the USSR consisted of the Russian SFSR, Byelorussian SSR, Ukrainian SSR, Lithuanian SSR, Latvian SSR, Estonian SSR, Georgian SSR, Kazakh SSR, and others, as well as multiple Satellite States. These satellite states included the Polish Peoples Republic, East Germany, and other members of the Warsaw Pact.
Title: History of Russia
Content:   The history of Russia between 1922 and 1991 is essentially the history of the Union of Soviet Socialist Republics, or Soviet Union. This ideologically based union, established in December 1922 by the leaders of the Russian Communist Party, was roughly coterminous with Russia before the Treaty of Brest-Litovsk. At that time, the new nation included four constituent republics: the Russian SFSR, the Ukrainian SSR, the Belarusian SSR, and the Transcaucasian SFSR. The constitution, adopted in 1924, established a federal system of government based on a succession of soviets set up in villages, factories, and cities in larger regions. This pyramid of soviets in each constituent republic culminated in the All-Union Congress of Soviets. However, while it appeared that the congress exercised sovereign power, this body was actually governed by the Communist Party, which in turn was controlled by the Politburo from Moscow, the capital of the Soviet Union, just as it had been under the tsars before Peter the Great.
Title: Russians
Content:  republics to form the Soviet Union as a country. Between 1922 and 1991 the history of Russia became essentially the history of the Soviet Union, effectively an ideologically-based state roughly conterminous with the Russian Empire before the 1918 Treaty of Brest-Litovsk. From its first years, government in the Soviet Union-based itself on the one-party rule of the Communists, as the Bolsheviks called themselves, beginning in March 1918. The approach to the building of socialism, however, varied over different periods in Soviet history: from the mixed economy and diverse society and culture of the 1920s through the command economy and repressions of the Joseph Stalin era to the "era of stagnation" from the 
Title: History of Russia
Content:  republics to form the Soviet Union as a country. Between 1922 and 1991 the history of Russia became essentially the history of the Soviet Union, effectively an ideologically-based state roughly conterminous with the Russian Empire before the 1918 Treaty of Brest-Litovsk. From its first years, government in the Soviet Union based itself on the one-party rule of the Communists, as the Bolsheviks called themselves, beginning in March 1918. The approach to the building of socialism, however, varied over different periods in Soviet history: from the mixed economy and diverse society and culture of the 1920s through the command economy and repressions 
Title: Outline of the Soviet Union
Content:  1957 in the Soviet Union ; 1958 in the Soviet Union ; 1959 in the Soviet Union ; 1960 in the Soviet Union ; 1961 in the Soviet Union ; 1962 in the Soviet Union ; 1963 in the Soviet Union ; 1964 in the Soviet Union ; 1965 in the Soviet Union ; 1966 in the Soviet Union ; 1967 in the Soviet Union ; 1968 in the Soviet Union ; 1969 in the Soviet Union ; 1970 in the Soviet Union ; 1971 in the Soviet Union ; 1972 in the Soviet Union ; 1973 in the Soviet Union ; 1974 in 
Title: Outline of the Soviet Union
Content:  The following outline is provided as an overview of and topical guide to the Soviet Union: Soviet Union &ndash; was a socialist state on the Eurasian continent that existed from 1922 to 1991. A union of multiple subnational Soviet republics, its government and economy were highly centralized. The Soviet Union was a one-party state, governed by the Communist Party with Moscow as its capital. It was a major ally during World War II, a main participant in the Cold War, and it grew in power to become one of the world's two superpowers (the other being the United States). The Soviet Union collapsed in 1991.
Title: Outline of the Soviet Union
Content:  Soviet Union ; 1940 in the Soviet Union ; 1941 in the Soviet Union ; 1942 in the Soviet Union ; 1943 in the Soviet Union ; 1944 in the Soviet Union ; 1945 in the Soviet Union ; 1946 in the Soviet Union ; 1947 in the Soviet Union ; 1948 in the Soviet Union ; 1949 in the Soviet Union ; 1950 in the Soviet Union ; 1951 in the Soviet Union ; 1952 in the Soviet Union ; 1953 in the Soviet Union ; 1954 in the Soviet Union ; 1955 in the Soviet Union ; 1956 in the Soviet Union 
Title: Outline of the Soviet Union
Content: 1922 in the Soviet Union ; 1923 in the Soviet Union ; 1924 in the Soviet Union ; 1925 in the Soviet Union ; 1926 in the Soviet Union ; 1927 in the Soviet Union ; 1928 in the Soviet Union ; 1929 in the Soviet Union ; 1930 in the Soviet Union ; 1931 in the Soviet Union ; 1932 in the Soviet Union ; 1933 in the Soviet Union ; 1934 in the Soviet Union ; 1935 in the Soviet Union ; 1936 in the Soviet Union ; 1937 in the Soviet Union ; 1938 in the Soviet Union ; 1939 in 
Title: Russia
Content:  On 30 December 1922, Lenin and his aides formed the Soviet Union, by merging the Russian SFSR with the Ukrainian, Byelorussian, and the Transcaucasian SFSR. Eventually the union grew larger to compass 15 republics, out of which, the largest in size and population was the Russian SFSR, which dominated the union for its entire history politically, culturally, and economically. Following Lenin's death in 1924, a troika was designated to take charge. Eventually Joseph Stalin, the General Secretary of the Communist Party, managed to suppress all opposition factions and consolidate power in his hands to become the country's dictator by the 1930s. Leon Trotsky, the main proponent of world revolution, was exiled from the Soviet Union in 1929, and Stalin's idea of Socialism in One Country became the official line. The continued internal struggle in the Bolshevik party culminated in the 

Question: when did the soviet union start and end?
Answer: in Eurasia.