The presidency of Nelson Mandela began on 10 May 1994, when Nelson Mandela, an anti-apartheid activist, leader of Umkhonto We Sizwe, lawyer, and former political prisoner, was inaugurated as President of South Africa, and ended on 14 June 1999. He was the first non-White head of state in the history of South Africa, taking office at the age of 75. His age was taken into consideration as part of his decision to not seek re-election in 1999.
The 1994 general election, held on 27 April, was South Africa's first multi-racial election with full enfranchisement. The African National Congress won a 63 percent share of the vote at the election, and Mandela, as leader of the ANC, was inaugurated on 10 May 1994 as the country's first Black President, with the National Party's F.W. de Klerk as his first deputy and Thabo Mbeki as the second in the Government of National Unity.
When Mandela began his term, he presided over the transition from minority rule and apartheid, winning international respect for his advocacy of national and international reconciliation.
Mandela encouraged Black South Africans to get behind the previously hated Springboks (the South African national rugby team) as South Africa hosted the 1995 Rugby World Cup. After the Springboks won an epic final over New Zealand, Mandela presented the trophy to captain Francois Pienaar, an African, wearing a Springbok shirt with Pienaar's own number 6 on the back. This was widely seen as a major step in the reconciliation of White and Black South Africans.
The 1996 constitution limited the president to two consecutive five-year terms. Mandela did not attempt to have the document amended to remove the two-term limit; indeed, he had only intended to serve one term, age being a strong factor in this decision. Mandela left office on 14 June 1999. He was succeeded by Mbeki, who was inaugurated to the presidency on 16 June. Mandela retired from active politics, and became, for several years afterward, engaged in a number of philanthropic activities.
According to Wikipedia