With the continuous growth of the city's population due to its expanding economy centered on the seaport, from the 1940s Portugal's administration built a network of primary and secondary schools, industrial and commercial schools as well as the first university in the region. The University of Lourenço Marques was opened in 1962. Portuguese, Islamic (including Ismailis), Indian (including from Portuguese India) and Chinese (including Macanese) communities — but not the unskilled African majority — achieved great prosperity by developing the industrial and commercial sectors of the city. Urban areas of Mozambique grew quickly in this period due to the lack of restriction on the internal migration of indigenous Mozambicans, a situation that differed from the apartheid policies of neighboring South Africa. Before Mozambique's independence in 1975, thousands of tourists from South Africa and Rhodesia (now Zimbabwe) frequented the city and its scenic beaches, high-quality hotels, restaurants, casinos, and brothels.