Question

Why did the United States support France in Vietnam? A. The United States supported France's claim to a colonial empire. B. The United States needed French approval for a trade agreement. C. The United States was honoring an old agreement with France. D. The United States needed French support in Western Europe.

Answer 1

The main reason why the United States supported France in Vietnam was because "D. The United States needed French support in Western Europe," since Us influence in region at this time was weak. 

Answer 2

The correct answer is D. The United States needed French support in Western Europe.

Without the support of the United States, there was a chance that the devastated post ww 2 France might come to Communist influences and this was not something that the US was going to allow. So they decided to help France in its endeavors while at the same time expecting France to help with protecting capitalism in Europe.