Explanation

Nelson Mandela was awarded the international Nobel prize in 1993

Nelson Mandela served as the first black president of South Africa on 10 May 1994 until 1999.

Nelson Mandela International Day celebrated: 18 July  

Nelson Mandela: imprisoned in 1962 

Nelson Mandela died: on 5th December 2013

Mandela served 27 years in prison, split between Robben Island, Pollsmoor Prison, and Victor Verster Prison.