Explanation:
1) Soviet Union start war with Afghanistan 1979 to 1989.
2) Reform such as glasnost and perestroika instituted in Soviet Union 1985
3) Mikhail Gorbachev becomes President of the Soviet Union in 1990.
4) Soviet government attempts to overthrow Gorbachev in 1991. Coup lasted for 3 days.
5) Soviet Union dissolves & Gorbachev resigned in Dec of 1991
6) Boris Yeltsin becomes President and establishment the Russian Federation.
