Which diagram shows how the federal government african americans increase their political power?

Among the options given on the question the correct answer is option C.

Civil rights Acts of 1957 which caused expansion of federal protection for minority voters.

Explanation: The Civil Rights Act of 1957 was the sign of first act that federal government took after the Reconstruction era. The act was signed by President Dwight D Eisenhower on September 9, 1957 . Originally the bill was proposed by the attorney  general of the president Herbert Brownell.

This bill came to on discussion after brown vs board case in 1954 which drew the public attention against the school segregation. However the Southern leader were running a strong campaign to resist the desegregation bill. On this situation , President Eisenhower proposed the bill on the Congress to provide the federal protection for the African American voting rights.

The act provided a six member committee named Civil Rights Commission to to gather information on depriving the minority from voting rights on the basis of race, color or religion.

Moreover, the bill prohibited  intimidating, coercing or otherwise interfering with the rights of persons to vote for electors for President and members of Congress.

Although, the Southern leaders had tried to put many limitations on the bill, it was one of the milestone for helping the African American to improve their political power through voting rights.

sorry i cant