I'm not sure if I know what you are asking, however, if you are asking WHY he is important, look below..
Answer:
<em><u>Mandela had spent twenty seven years in jail and was greeted as a hero on his unleash. he's famed for promoting a message of forgiveness and equality. social policy was abolished in 1991, and 3 years later, Republic of South Africa control its initial elections during which black folks, likewise as white, were allowed to vote. once attaining his freedom, Nelson Mandela light-emitting diode the ANC in its negotiations with the governing National Party and numerous alternative South African political organizations for an finish to social policy and therefore the institution of a racial government.</u></em>
Sentence three is the correct sentence. All of the others have some grammatical error in them. In the first, "felled" is incorrect and not a word. It also says "walk boots" instead of the correct verbal adjective "walking boots." In the second, "weren't" is not usually considered very academic and "tight" should be in the adverb form "tightly." Number four is wrong because it used "walked boots" instead of of "walking boots" and "tight" instead of "tightly." "Fallen" is incorrect in number 4, because it should have been "had fallen" if one was going to use the verb "fallen."