Which of the following was not a communist country at the time of the Vietnam War?

B. France

Explanation:

The Vietnam war was fought between November, 1955 till April 1975. It was a war fought between North and South Vietnam. North Vietnam had allies such as China, and the Soviet Union. These countries were communist countries at the time the war was fought. South Vietnam had the support of the United States, Australia, South Korea, and the Philippines. These countries were against communism.

So, basically, the war was a result of rivalry between communist North Vietnam and non-communist South Vietnam. France at the time of the war was more of an anti-communist country.