South Africa had apartheid, which divided society up in to black and white.Nelson Mandela changed that, and now Pretoria, Cape Town and Johannesburg all are growing fast.

• 纳尔逊曼德拉改变了这种制度，如今，比勒陀利亚、开普敦和约翰内斯堡这三座城市都在迅速发展。