Johannesburg World Cities Research Network. In 2011, the population of the city of Johannesburg was 4,434,827, making it the most populous city in South Africa. In the same year, the population of Johannesburg's urban agglomeration was put at 7,860,781. The land area of the municipal city () is large in comparison with those of other major cities, resulting in a moderate population density of . The city was established in 1886 following the discovery of gold on what had been a farm. The city is commonly interpreted as the modern day El Dorado due to the extremely large gold deposit found
José S. Alegría city walls of Old San Juan. The city of Dorado honored his memory by naming a high school, Jose S. Alegria High School, after him. José S. Alegría José S. Alegría (July 17, 1886 – July 29, 1965), was a poet, writer, lawyer and politician. Alegría was a founding member of the Puerto Rican Nationalist Party and president of the political organization from 1928 to 1930. Alegría was born in the town of Dorado, Puerto Rico where he received his primary and secondary education. In 1901, he earned a teachers certificate. Alegría became interested in politics at a young age