Belief in Stereotypes of Other Cultures is Based on Refusal to Recognize Diversity within One's Own Culture
Often, communication among people of different countries, unfortunately, boils down to "it is like this in Country A, but it is like that in Country B." People quickly just to country-to-country comparisons, utilizing overgeneralized stereotypes that assume everyone in a particular country follows a certain set of norms universal yet unique to the country. Such assumptions quickly bring down in countries where different cultures coexist, especially in migrants-dominated societies like the US and African countries, where borders are arbitrarily drawn by colonists ignorant of local cultures.