Most of the increase of african americans in professional and managerial positions occurred
a. before 1980.
b. in the 1990s.
c. since the year 2000.
d. never.

The appropriate response is B. African Americans had dependably been isolated and utilized as slaves up until the 1960s period. That is the point at which the way society treat them began to change and giving them more open doors in life.

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