Give some stream of consciousness and then the answer. Context: The 1980 Summer Olympics boycott was one part of a number of actions initiated by the United States to protest the Soviet invasion of Afghanistan. The Soviet Union, which hosted the 1980 Summer Olympics, and other countries would later boycott the 1984 Summer Olympics in Los Angeles.\n\nQuestion: which military action led to us boycott the 1980 olympics?
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To answer the question, consider the following: The 1980 Summer Olympics boycott was one part of a number of actions initiated by the United States to protest the Soviet invasion of Afghanistan.
Therefore, the answer is the Soviet invasion of Afghanistan.
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