what caused relations to deteriorate between the united states and the soviet union in 1979?\nthe united…

what caused relations to deteriorate between the united states and the soviet union in 1979?\nthe united states invaded afghanistan.\nthe soviet union invaded afghanistan.\nthe soviet union hosted the olympic games.\nthe united states ratified the salt ii treaty.
Answer
Brief Explanations:
In 1979, the Soviet - Union invaded Afghanistan. This led to a significant deterioration in relations between the United States and the Soviet Union as the U.S. opposed the Soviet action, seeing it as an act of aggression and a threat to regional stability. The U.S. imposed various sanctions and took other measures in response.
Answer:
The Soviet Union invaded Afghanistan.