Answer:
It changed stereotypes
Explanation:
In earlier days Africa was seen as a continent not as developed as the rest of the world, being nomads and scavenging for food. With learning about Mansa Musa it is clear that Africa had many developed civilizations. Mansa Musa was extremely rich and it showed how complex Mali already was compared to early Europeans thinking of Africa being uncivilized.
It would be the "a. Social Security Administration" that was begun during the New Deal and still exists today, since many people rely on this in order to retire later in life.