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 Should Be : <span>D) Enforcing Immigration Laws</span>
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As I answered before, when a world war has just finished, the country's resources are depleted. So, it is difficult to provide jobs and houses for returning soldiers because these would require manpower and monetary resources. The period after the war is dedicated to picking up the scrap and trying to make do with what's available through cooperation. So, for me, the most appropriate course of action is helping labor unions work together with businesses.
the social improvement wasn't tied to any social structures,made the bible more available and increased the reading ability