Final answer:
The term that describes the belief in the superiority of American culture by some American business people, and the notion that others should follow the American way, is ethnocentrism. It is the practice of judging other cultures by the standards and norms of one's own culture, which can lead to conflict and cultural imperialism.
Step-by-step explanation:
The attitude held by some American business people that American culture is superior to all others, and that everyone else should adopt the American way of doing things, is described as ethnocentrism. This belief system assumes that the beliefs, values, and practices of one's own culture are the best and that other ways of doing things are not worth considering. Ethnocentrism can lead to misunderstanding, stereotyping, and conflict when individuals or institutions impose their cultural values on another culture, a practice sometimes called cultural imperialism.
Sociologist William Graham Sumner characterized ethnocentrism as the belief that one's own culture is better than all others, and while this may include positive pride in one's own culture, it becomes problematic when it diminishes the value and contributions of other cultures.