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
Agriculture in Mozambique 120,000 tons. The potential catch is estimated at 500,000 tons of fish. South African trawlers are allowed to fish in Mozambican waters in return for providing a portion of their catch to Mozambique. The European Community, Italy, and Japan have each entered into agreements designed to help develop the fishing industry. Thick forest covers the wet regions, where there are fertile soils, but the drier interior, which has sandy or rocky soils, supports only a thin savannah vegetation. Extensive stands of hardwood, such as ebony, flourish throughout the country. Wood production is from natural forests and is almost entirely consumed