field in preparation for the 1984 Summer Olympics in Los Angeles. Retrieved 1 December 2017 via Google Books. Although in theory prices were legally set from above, in practice they were often negotiated, and informal horizontal links (between producer factories etc.) were widespread. The Rise and Fall of the Soviet Union. Stalin's Great Purge resulted in the execution or detainment of many " Old Bolsheviks " who had participated in the October Revolution with Lenin. The Brezhnev era also introduced a rule that required all university applicants to present a reference from the local Komsomol party secretary. The Soviet Union had its roots in the 1917 October Revolution, when the Bolsheviks, led by Vladimir Lenin, overthrew the Russian Provisional Government which had replaced Tsar Nicholas II during World War. Following the failed coup, the State Council of the Soviet Union became the highest organ of state power "in the period of transition". Ussr in 19 (Russian sfsr in red).