Answer:
was a well-known civil rights activist who had a great deal of influence on American society in the 1950s and 1960s. His strong belief in nonviolent protest helped set the tone of the movement. Boycotts, protests and marches were eventually effective, and much legislation was passed against racial discrimination.
Explanation:
I believe the answer is D as B and C are just completely false and while A could be possible its not the answer because granting voting rights to former slaves doesn't really punish the south but it does give former slaves suffrage. So its D
It helped prevent Identity theft and it can help police identify you in troublesome situations.