When anthropologist Napoleon Chagnon first confronted the Yanomamo tribe of South America, he became nauseated at the sight of their customs and social environment. Chagnon experienced:

Chagnon experienced a culture shock at the sight of the customs and social environment that the Yanomamo tribe of South America practiced and lived in.

Explanation:

The extremely orthodox and bewildering practices that were followed by the people of the Yanomamo tribe disturbed anthropologist Chagnon. The conflicts among themselves and their habit of attacking each other was one reason that suffered a culture shock. He recorded the practices and the social environment of the tribe to be the strangest that he had ever experienced with any other tribe that he had come across.