Vietnam

The Vietnam War took place in ______.
The United States fought against ________.
When the United States left Vietnam, it had _______.

The theory that if communists take over one country, they will soon take over more and more nearby countries is known as the ______ Theory
How did the Domino Theory help convicne people that the U.S. should go to war in Vietnam?
The United States powerful weapons would not give it an advantage against its enemy. Which word choice is an antonym for the word "advantage" as used in this sentence?
The Domino Theory was used to ________.
The Vietnam War was most directly caused by _______.