Complex sentence: Mangosuthu Buthelezi was chief minister of his kwa-Zulu homeland from 1976 until 1994, and in post-Apartheid South Africa he has served as President of the Inkatha Freedom Party and Minister of Home Affairs.
Split into simpler sentences: Mangosuthu Buthelezi was chief minister of his kwa-Zulu homeland from 1976 until 1994. In post-Apartheid South Africa he has served as President of the Inkatha Freedom Party and Minister of Home Affairs.