Zhongping's research focuses on how those who have wealth and power are socialized differently from those who do not have wealth and power. zhongping's research supports the perspective

I believe the answer is: Conflict

According to conflict perspective, people in a society would constantly engaged in conflicts to control the limited amount of resources.
During this process, people who held the most connection would most likely only socialize with those who had similar level of power, in order to prevent people from other class to control the resources.

Pilgrims is the answer

United states v.  nixon, 418  u.s.  683 (1974),  was  a landmark  united states supreme court case  that resulted in a unanimous  decision  against president richard  nixon, ordering him to deliver tape recordings  and  other subpoenaed materials to a  federal  district  court.