The correct answer is the following.
After the dissolution of the Soviet Union under the leadership of Mikail Gorbachev, many countries got its independence from the USSR, but it also implied to confront directly to new problems. Economic issues and ethnic problems were the first series of difficulties faced by Central and Eastern countries. We have the case of Ukraine and Russia permanent conflicts, augmented with the Russian invasion to Crimea. Ethic difficulties and differences became wars and genocides as in the case of Bosnia. Most of these countries are still trying to get solutions to their problems.
