Answer:
Sigmund Freud
Explanation:
Sigmund Freud (writing between the 1890s and the 1930s) developed a collection of theories which have formed the basis of the psychodynamic approach to psychology.
Legislation meant to segregate blacks and whites in a legal way.
As the US supreme court asked that as long as the blacks and white had equal fundings and that all conditions were the same, segregation can be seen as legal. However, this rarely happened, and it led to desegregation by force at the end. The Jim Crow Laws was the birth of this ruling, as it imposed "equal" but segregated laws (such as segregated laws for public transport, bathrooms, resteraunts, etc.) in much of the states.
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I think it’s A. Native People.