Many of the former Soviet republics began the transition to a market economy in 1990-1991 as a result of the dissolution of the Union of Soviet Socialist Republics (USSR). They have since made concerted efforts to rebuild and restructure their economic systems over the last twenty years, with varying results.
1.) Which former Soviet republic currently a member of the Commonwealth of Independent States (CIS) has been the most economically successful in making this transition?
Explain and justify your answer in 300 words.