Answer:
The Soviet Union saw life for the last time, as a group of nations under one system of control, on December of 1991, when, at the end of a long struggle against rebellions all over the nation, especially by the Baltic republics of Lithuania, Estonia and Latvia, President Mikhail Gorbachev decided to dissolve the Soviet Union and grant independence to all those who had been fighting for it. This day marked the end of the biggest Communist nation and also the end of the Cold War.
The repercussions, especially on the Balcans, was enormous. First, because independence movements, especially in countries like Lithuania, Estonia and Latvia had initiated much earlier, around the 1980´s, and the dissolution meant that these nations had finally achieved their goal, but also because it spurt nationalism across these nations, that also brought conflict between them.
All of the countries that had formed part of the Soviet Union felt the effects of the dissolution of it. However, one such country was Ukraine, who had been under Russian rule for centuries. Now, they were able to establish their own identity, and their own system of government, which they immediately did. The Balcan countries also felt the effect as most of them immediately moved from Communism into a democratic and capitalist system. Another repercussion was that nationalist factions grew and conflict arose between some of the smaller, now independent, Balcan nations, especially regarding ethnicity.