Simplify the following text for a Grade 8 native English-speaking person.
Original: Archbishop Desmond Tutu ( born 7 October 1931 ) won the Nobel Peace Prize in 1984 for his work fighting apartheid in South Africa .
Simplified: The Most Rev. Dr. Desmond Mpilo Tutu ( born 7 October 1931 ) is a South African activist and Christian cleric who rose to worldwide fame during the 1980s as an opponent of apartheid .