Answer:
Soviet Union, China, Vietnam, and Cuba.
Explanation:
The answer is B. To disrupt the South's ability to trade
As a result of crisis at the Democratic National Convention of 1968, people lost faith in the system. The Democratic National convention was held from 26th of august to 29th of August in the year 1958 by the United States Democratic Party. This convention took place at the International Amphitheater in Chicago of Illinois.