What are some major events and achievements in mandela's life?

Nelson Mandela was referred as one of the great figures in the past century for many reasons. First of all, Nelson Mandela was an anti-apartheid leader who became South Africa's first black president. Second of all, major events and achievements that Nelson Mandela consummated in his life is in 1952, Mandela leads the defiance campaign which encouraged people to break segregation laws and he passed an exam in order to be an attorney, and with Tambo, establishes the first black law partnership in the country. In 1961, he helps establish ANC guerilla wing, Umkhunto we sizwe, or spear of the nation. And last but not least, in 1994, Nelson Mandela became the first black president after democratic elections as an achievement that will never be forgotten in black history.