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Some of us do not even know who Nelson Mandela is and why is he so important globally. Nelson Mandela was the former president of South Africa and perhaps the first black South African who held this elite position.However, world remembers him more because of his peaceful and non violent movement for providing equal rights to the black Africans in South Africa.elson Mandela was the former president of South Africa and perhaps the first black South African who held this elite position. However, world remembers him more because of his peaceful and non violent movement for providing equal rights to the black Africans in South Africa.
John D. Rockefeller is important because by the early 1880s standard oil controlled about 90% of an oil business, which he discovered. Rockefeller saw a great opportunity to â¦ start this business.In Cleveland, Ohio, he built his 1st oil refinery.ohn D. Rockefeller is important because by the early 1880s standard oil controlled about 90% of an oil business, which he discovered. Rockefeller saw a great opportunity to â¦ start this business.