The includes the belief that racism is such an ingrained feature of u. s. society that it appears to be ordinary and natural to many people.

critical race theory.

Explanation:

Critical Race theory is originated in the years following the Civil Disobedience Movement to challenge the idea that it has solved the problems of racial differentiation in American Society. It is based on the notion that race is not a biological construction but a social construct which helps the white population to control the economic and political environment. And this has created social problems such as poverty, criminality, etc assigned to a particular race.

the great wall of china worked as a defense for the feudal states of the zhou dynasty to the north. during the warring states period more walls were put up to defend the borders of the different kingdoms. it was semi successful because despite the wall, the mongols eventually conquered china also the great wall provided protection to the economic development and cultural progress, safeguarded the trading routes such as the silk road, and secured transmission of information and transportation. @jayxboof

answer: karl marx, max weber, and emile durkheim (the fourth could be considered georg simmel)

explanation: