Nelson Mandela, born in 1918, was a prominent anti-apartheid revolutionary who co-founded the African National Congress Youth League and pursued equality for South Africans. After spending 27 years in prison, he became South Africa's first democratically elected president in 1994, focusing on reconciliation and constitutional development. Additionally, Mandela advocated for AIDS awareness through his campaign "46664" and was revered for his peace efforts, prompting concerns about South Africa's future after his passing.