Apartheid was a South African hierarchical system based on the separation of blacks and other nonwhites from the whites who controlled South African society and government. Apartheid (literally apart-ness comes from the Afrikaans word meaning "separation," and is officially applied to the systematic government policies enacted by the ruling National Party, which was dominated primarily by Afrikaners (people of Dutch ancestry in South Africa). Apartheid officially existed as government policy in South Africa from 1948 until 1994.
Upon the Race's conquest of South Africa in 1942, they abolished the then-developing system of racial discrimination they found there. Classifying Big Uglies on the basis of their skin color made no sense to the Race's commanders, and freeing one group of Tosevites from oppression by others was a convenient way of gaining support.