Why might isolationism lead to ethnocentrism?

Isolationism can lead to ethnocentrism because it limits exposure to diverse cultures and perspectives, fostering a belief that one's own culture is superior. When a society isolates itself, it may rely on stereotypes and misconceptions about other cultures, reinforcing a narrow worldview. This lack of interaction can breed suspicion and hostility towards outsiders, further entrenching ethnocentric attitudes. Ultimately, isolationism can create an echo chamber where only familiar ideas and values are validated and reinforced.