Which Cold War era (1945-1991) conflict or incident do you feel had the greatest

Which Cold War era (1945-1991) conflict or incident do you feel had the greatest impact on the eventual fall of the Soviet Union as a Communist superpower? Describe the event including how it impacted the world power. Your response should be at least 500 words in length. You are required to use at least your textbook as source material for your response. All sources used including the textbook must be referenced; paraphrased and quoted material must have accompanying citations.Levack B. Muir E. & Veldman M. (2011).The West: Vol. 2. Encounters & transformations: Since 1550(3rded. pp. 934-937 939-945). Upper Saddle River NJ: Pearson Education Inc.No Wiki Dictionary.com or Plagiarism