As of 2011, South Africa has a population of 9.1% White people, with 2.6% being Indian/Asia, 8.9 "Coloured", and 79.4% African. I shouldn't need to go into the long history of Apartheid, and its end resulting in the African population assuming total dominance of social, political and economic life from the White population.
The challenge here is, starting with 1900, to increase the population of White South Africans to the greatest extent plausible. Bonus if you do it in the post-WW2 years.
The challenge here is, starting with 1900, to increase the population of White South Africans to the greatest extent plausible. Bonus if you do it in the post-WW2 years.