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The capitals of South africa are: Pretoria, Pretoria is a city located in the northern part of Gauteng Province, South Africa. It is one of the country's three capital cities, serving as the executive (administrative) and de facto national capital; the others are Cape Town, the legislative capital, and Bloemfontein, the judicial capital. 
In South Africa they speak:Afrikaans, English, IsiNdebele, IsiXhosa, IsiZulu, Sesotho sa Leboa,  Sesotho, Setswana, SiSwati, Tshivenda and Xitsonga.
Religions in South Africa:
Christianity 73,52%
Non-religious 8,08%
Buddhism 0,03%
Islam 1,45%
Hinduism 1,25%
African traditional religion 15%
Judaism 0,17%

Sources:  http://www.southafrica.info/about/people/language.htm#distribution.