Question

reasons for falling of ussr

Answer 1

The USSR also faced foreign attacks on theSoviet economy. ... When the Soviet Union's oil and gas revenue dropped dramatically, theUSSR began to lose its hold on Eastern Europe. Meanwhile, Gorbachev's reforms were slow to bear fruit and did more to hasten the collapse of the Soviet Union than to help it.

Answer 2

The real fall of soviet union started in 1989, when all the allies of USSR (Warsaw Pact members) started to come out of communist form of government and peaceful revolutions sparkled all across Eastern Europe.Later, On Christmas Day 1991,Soviet Flag flew over Kremlin in Moscow for last time ending 69 years of world's largest  Empire comprising 15 Nations.