The correct answer is B) It deterred communism from spreading by showing its willingness to stop North Korea's invasion of South Korea.
The United Nations impacted the course of the Cold War in that it deterred communism from spreading by showing its willingness to stop North Korea's invasion of South Korea.
We are talking about the first serious and direct action taken by the United Nations that many historians considered coercive against the USSR. The UN was decided to stop North Korea that tried to invade South Korea.
In those years, the USSR had occupied North Korea and the United States had decided to support South Korea, establishing its policy of containment.
Another tense moment lived in the United Nations was when the Soviet Union ordered the Berlin Blockade. The Berlin blockade after World War II showed Europeans that the USSR wanted to challenge the United Nations to see if it was willing to take action.