'Ethnocentrism' is defined as the disposition in which an individual perceives the world through his own cultural point of view which is considers as the standard for evaluating and deducing all the other cultures. Such perspective is often considered biased or prejudiced as one is greatly influenced by his culture that makes him overlook the positives of other cultures.
As per the question, Abigail's attitude would be regraded as 'ethnocentrism' as she criticizes German culture as she perceives the world through the American(cultural) perspective(as a standard) and judges the German culture on the basis of her standard cultural perception. Thus, her attitude would be characterized as '<u>ethnocentrism</u>'.
It matters because you have your opinion and your mom has hers but you want yourself to decided for you because you don't want your mom to decide for you, you want to make the decision yourself
Some major signs would be sharing their own opinions and beliefs. Such as saying things like "He has the worst ideas." or "She is ugly." Also, they would try to get you to agree with them.
