The civil rights act of 1964 affected voting rights by

a. banning the discriminatory use of registration requirements.

b. making the 15th amendment a truly effective part of the constitution.

c. leading to the establishment of the u. s. commission on civil rights.

d. providing for the appointment of federal voting referees.

The civil rights movement deeply affected American society. Among its most important achievements were two major civil rights laws passed by Congress. These laws ensured constitutional rights for African Americans and other minorities. Although these rights were first guaranteed in the U.S. Constitution immediately after the Civil War, they had never been fully enforced. 

With that, the correct answer is letter A.

Italy france germany

Blue ridge is the correct answer.