who set up a five year plan for the operation of the soviet union
First five-year plan The Soviet Union entered a series of Five -Year Plans which began in 1928 under the rule of Joseph Stalin. Stalin launched what would be referred as a “revolution from above” to improve the Soviet Union’s domestic policy, more importantly centered around rapid industrialization and secondly, the  collectivization of agriculture. His desire was to rid the country of all record that capitalism once existed there under the New Economic Policy.
Dissolution of the Soviet Union The Soviet Union was dissolved on December 26, 1991. It was a result of the declaration number 142-Н of the Soviet of the Republics of the Supreme Soviet of the Soviet Union.[1] The declaration acknowledged the independence of the former Soviet republics and created the Commonwealth of Independent States (CIS), although five of the signatories ratified it much later or did not do so at all. On the previous day, Soviet President Mikhail Gorbachev, the eighth and final leader of the Soviet Union, resigned, declared his office extinct, and handed over its powers – including control of the Soviet nuclear missile launching codes – to Russian President Boris Yeltsin. That evening at 7:32, the Soviet flag was lowered from the Kremlin for the last time and replaced with the pre-revolutionary Russian flag.[2]