On the Racial Groups and Relationship among Racial Groups

There are various concepts of racial group and features of racial groups.The concepts of racial group and nation originated from the West,but with some dinstinctions between these two concepts.Racial group identification which manifests itself through a series of cultural factors is a main aspect of the research on the racial groups.Culture is the basis of racial group boundary. As to the relationship among racial groups,theories are different:such as assimilation theory, pluralistic culture hypothesis, human-ecological culture theory ,power level theory and integration theory.