I believe it's Communists.
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Since a very beginning, US only had a tough attitude: the world had to give explanations to the Americans and Vietnam was a country with a very deep principles, one of them was the respect for the older men as a bridge between the real world and his gods, While US despite old men as an "unproductive ones".
Both groups have a very deep history of racial persecution that they and their ancestors went though
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Comunisum and the start of the cold war
Answer:
Humanism. During the 14th century, a cultural movement called humanism began to gain momentum in Italy. Among its many principles, humanism promoted the idea that man was the center of his own universe, and people should embrace human achievements in education, classical arts, literature and science.