federal Taxes were too high.
Federal Gov't was too strong and put too many rules in place on states.
Rugged Individualism, that individuals should take care themselves and not rely on Federal Gov't to help (poor) or regulate (rules)
The answer to this would be non-instental question
Vietnamese immigrants are much more likely to be naturalized U.S. citizens than the overall immigrant population. In 2014, 76 percent of the 1.3 million Vietnamese immigrants residing in the United States were naturalized citizens, compared to 47 percent of the overall foreign-born population
USA intervened in Korea and Vietnam as war efforts and in Greece and Turkey as coups.
Explanation:
In Turkey the US government aided a coup by the military to overthrow the government which in turn led to a regressive government to be placed in there.
A similar thing happened in Greece when a socialist party was elected into the Country with affiliations or alleged ones with the Soviet Union.
Korea was invaded by the USA in support of the south during the Korean war so as to stop the communist North from taking over all of the Korea under the influence of USSR.
Similar thing happened in Vietnam but it was not successful and Vietnam did fall to the communist army after US departure.