It was the 60’s that spawned the Vietnam war, doofus.
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Viet Nam - Nov 1 1955 - Eisenhower deployed “training troops”
It was the 40’s that spawned the Vietnam war; e.g. created the political divisions and core leadership for the communists. Our first forces were in Vietnam as observers/advisors with the French just after WWII, and our first independent forces were in country in the very early 1950s.
It was the 50s that spawned the Viet Nam war. US involvement began in 1954.