What did Nelson Mandela do that helped others?

Nelson Mandela fought for black people rights during apartheid and spent 27 years of his life in prison. F.W. de Klerk released him from prison when he unbanned the ANC. Nelson Mandela also became the first black president in South Africa. Like the same thing in the US- Obama first black President of the United States. Mandela also wanted whites to be treated equally, too. Nelson Mandela Quote- "For to be free is not merely to cast off ones chains, but to live in a way of respects and enhance the freedom of others."