【正确答案】topic In my opinion, the breakup of the Soviet Union in the early 1990s was among the most influential events in the 20th century. reason 1 Crucially, the breakup of the Soviet Union led people to recognize the defects of centrally planned economy. Later it encourages various reforms in countries all over the world and leads to a new period of growth in economy across the world. reason 2 Additionally, the breakup of the Soviet Union was an end to the cold war which America was also involved in, which brought a temporary but precious peace to the world. conclusion Just because of the reasons listed above I would like to learn more about this event.