Yo im sorry for making you think this is a answer but that is a absolutley amazing essay topic
The definition of compulsory is required by law or a rule; obligatory.
Answer:On 29 May 1990, he was elected the chairman of the Russian Supreme Soviet. ... Upon the resignation of Mikhail Gorbachev and the dissolution of the Soviet Union on 25 December 1991, the RSFSR became the sovereign state of the Russian Federation, and Yeltsin remained in office as president.