Why did the US support France instead of Vietnam after ww2?

After World War II, the U.S. supported France in its efforts to re-establish colonial control over Vietnam due to its broader strategy of containing communism during the Cold War. The U.S. viewed the struggle in Vietnam through the lens of the domino theory, fearing that if Vietnam fell to communism, neighboring countries would follow. Additionally, France was a key ally in Western Europe, and the U.S. wanted to maintain strong relationships with European powers. Thus, supporting France was seen as essential to preserving Western influence in the region.