Demographics of Mozambique are dominant in the northern part of the country — the Sena and Shona (mostly Ndau) are prominent in the Zambezi valley, and the Shangaan (Tsonga) dominate in southern Mozambique. Other groups include Makonde, Yao, Swahili, Tonga, Chopi, and Nguni (including Zulu). The country is also home to a growing number of white residents, most with Portuguese ancestry. During colonial rule, European residents hailed from every Mozambican province, and at the time of independence the total population was estimated at around 360,000. Most vacated the region after independence in 1975, emigrating to Portugal as "retornados". There is also a larger
History of rail transport in Mozambique Ocean north to Mocuba. It has no connection with any other railway lines. All of Mozambique's colonial railways were operated initially by chartered companies, for which the lines were one of their main sources of income, alongside the collection of taxes and profits from agriculture. Only in 1941 was the last concession company nationalized, thus bringing the railways under the total ownership of the Portuguese colonial authorities. In connection with the independence of Mozambique, the national railway company, "Caminhos de Ferro de Moçambique", was founded on 25 June 1975. It was later renamed "Portos e Caminhos de Ferro de Moçambique"