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Botswana is a part of Africa... Many parts of Africa are developing but South Africa, I would say has a fast pace economy as apposed to other countries in Africa. Google pictures of Sandton in Johannesburg, South Africa (I work here)... Also I belong to Rivers church... apart of the Hillsong Family...
I've seen some of SA. My friend, well, we dated for a bit haha. So she would sometimes show me pics or find videos on Youtube of the areas she was in. Was really neat to see some of the locations. I even google earthed one area she was in, and saw overall, how developed it was. But i don't think it was anywhere near Johannesburg. I know one was Port Elizabeth, and i forget the third place she lived.
SA definitely does not fit into all the expectations one might have of Africa as a whole.