mine in Africa is the deepest and richest gold mine in the world. Mponeng gold mine began producing

Africa boasts one of the world's richest cities that stands comparison with other financial metropolises such as London or New York. Often known as the City of Gold, Johannesburg in South Africa is officially the continent's wealthiest city. According to the Henley Partners Africa Wealth Report, over 12, 000 millionaires, 25 centi-millionaires( worth ￡100 million or more), and two billionaires live there. The discovery of gold in the 19th century transformed the city's fortunes, turning it into