Answer:
Common Rule is the correct answer.
Explanation:
The problem with self selection in research is that it makes it makes causal interpretations difficult.
<h3>What is self selection?</h3>
This is a type of bias that occurs often times in social science research. In this type of bias, the respondents cause it because they are totally allowed to decide things for themselves.
The respondents are left to decide for themselves whether they want to participate in the research or not.
Read more on self selection here:
brainly.com/question/25261401
I believe the term you’re looking for it tribe.
Plessy v. Ferguson
In this case, Plessy, an African American refused to give up his seat in a segregated bus, which was brought to court and convinced the courts to stop racial segregation in public facilities.
Brown v. Board of Education
This case addressed segregation in public schools, where blacks and whites were not treated fairly, which violated the fourteenth amendment of the United States.
Precedent Established: Separate But Equal. This meant that segregation was still a present issue and law to be enforced in the U.S., but no matter what race, every American citizen was to be granted certain rights shared among each other.
Landmark Cases: Landmark Cases are referred to as Landmark Cases because they were influential cases with rulings that shaped a lot of how the U.S. treats it's biggest issues, free's people from oppression and segregation, including the creation of Precedents.