If the border with Laos had been closed and North Vietnam had not been able to operate in the country, the communist side would not have been able to stock up on resources, men, ammunition, weapons, food and medicine through the HoChi Minh Trail.
Therefore, the forces of the North that were fighting in South Vietnam would have been out of supply, and their defeat would have been imminent.
The answer is The increased opposition to war.
Nixon was not popular with his foreign policy of war to fight communists. During his term, people held numerous strikes that showed that the people were against its implementation. They don't want numerous soldiers to get involved and suffer. They also don't want people from foreign lands to lose their lives because of this.
<span>The division of the United Nations which is responsible for carrying out cultural, educational, and health activities is </span>The Economic and Social Council (ECOSOC). This division was established by the UN Charter in 1946<span> as one of the six main organs of the </span>United Nations.