The central ideas of the text are Nelson Mandela served one term as South Africa's president and Nelson Mandela was the son of a chief of the Tembu Tribe.
Step-by-step explanation:
Nelson Mandela become the president of South Africa for his pain in inability and also thank his comrades in freedom struggle.
His father was the chief of the Tembu people a part of Xhosa nation. The Mandela Effect denotes that when a large people number of people share a false memory and attributed to the existence of multiple universes.
He was a social rights activists, politician and philanthropist has become first black president of South Africa.