Although the Solidarity movement was founded in Poland, it had significant effects on the Communist reign in the country and ultimately integrated with Gorbachev's reforms towards the fall of the U.S.S.R. The movement began as strike action in protest against rising food prices. Lech Walesa acted as the leader of the Solidarity movement, unifying the public against government abuses. Although the movement was outlawed, and several workers imprisoned as a result, Gorbachev's reforms changed this. It was once again considered legal, and the movement translated itself as a social gain for citizens in protest against a government that, at the time, positioned itself as the ultimate authority. Solidarity was legalized in 1989 and candidate endorsed by the movement won almost all the seats in the upper house of the bicameral legislature. In other words, Communism was being replaced by a movement that considered the voice of the majority as one of primary importance.
The Soviet Union fell in 1991, which was the year during which Boris Nikolayevich Yeltsin became the first President of the Russian Federation. Yeltsin originally supported Mikhail Gorbachev, although he did emerge as one of Gorbachev's most powerful opponents. Significantly, Yeltsin was elected by popular vote to the position of President of the Russian Soviet Federative Socialist Republic (SFSR).He won 57% of the vote in a contest that included six candidates. As such, Yeltsin was the second democratically elected leader in the country's history. As such, Yeltsin became the representative of democracy in Russia, which was the culmination of movements such as Solidarity, Perestroika, and Glasnost. This created an atmosphere that shaped the downfall of the U.S.S.R.
In conclusion, the fall of the U.S.S.R. was due to a number of factors. The new ideologies introduced by Gorbachev, for example, convoluted with the ideals of democracy espoused by Solidarity and Boris Yeltsin to finally see the end of the Soviet Union.