The domino theory, who governed much of the United States in the early 1950s, was mostly used as a way to justify their government’s support of a non-communist in the South Vietnam against the communist North Vietnam. Such theory is described as when a domino strikes another, it can lead to a chain reaction where all dominos fall, in this case the idea was to spread communism in the world. Once communism had taken hold in Russia, Vladimir Lenin believed it would cause similar revolutions in Germany, France and other European nations.
In September 1945, Vietnam claimed its independence from France, and after the United States was notified, they provided the French with military and financial aid. Around a month later, the French lost a major battle, which led to the withdrawal of France from Vietnam. In the end, although the United States’ effort to block the communist takeover had failed, communism did spread throughout the rest of Southeast Asia and the nations remained out of communist control.