On April 27, 1994, South Africans of all races voted in the country's first fully democratic election. Nelson Mandela, imprisoned for 27 years for fighting apartheid, and his African National Congress won 62.7% of the vote. On May 10, Mandela was inaugurated as South Africa's first Black president in Pretoria. The apartheid system, instituted in 1948, had stripped Black South Africans of land, citizenship, and freedom for 46 years. International sanctions and internal resistance led President F.W. de Klerk to unban the ANC and release Mandela in February 1990, beginning four years of negotiations that ended the apartheid system.