…far the largest is the Pretoria-Witwatersrand-Vereeniging complex; centered on Johannesburg, it radiates about 45 miles (70 km) in each direction and is now mostly in Gauteng province. Other urban concentrations are centered on Durban, Cape Town, and the Gqeberha–Kariega (formerly Port Elizabeth–Uitenhage) area. The main centers in these metropolitan areas…
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