1. <span>b.Vietnam would be divided into two countries--North and South and France would withdraw troops
2. </span><span>b. South Vietnam--this was the "democratic" portion of Vietnam
3. </span><span>c. if one country falls to communism, it's neighbors would also become communist--this is the fear with the Indochina peninsula being the countries were all so close.
4. </span><span>b. By supporting the French colonial government--the US sent money, weapons, and aides. </span>
The main cause of the Vietnam War was that communism was threatening to expand all over South East Asia.
<h3>What is Vietnam War?</h3>
Your information is incomplete as the excerpts aren't given. Therefore, an overview will be given.
It should be noted that the Vietnam War was a conflict between North Ana South Vietnam.
Also, the main cause of the Vietnam War was that communism was threatening to expand all over South East Asia.
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A historian is an expert in or student of history, especially that of a particular period, geographical region, or social phenomenon.