Firsty, quarrels on personal level may occur due to different origins. To illustrate, a native person can try to surpress the ones who came from another origin,which can lead to fight among them.secondly,feelings of anger and hatred may develop if they do not like each other's rituals or customs.to illustrate,a person belonging to jain community, those who follow strictly vegetarian diet, may not be happy with a person who is living next door to him and eating meat.another drawback, the most fierce one,is communal clashes.for example, group of people who have majority in that area may cause damage to the ones who are less in number as compared to the native ones.