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
Postage stamps and postal history of Mozambique 1975, many existing stamps, some going back as far as 1953, were issued with an overprint marking independence. Issues of independent Mozambique have been relatively restrained and focus on local subjects. Philatelic issues are frequently released in sets of four-to-six stamps. For instance, in 1985 there were 10 issues, of which three were single commemoratives, five were sets of four, and the remaining two were sets of six. The Kionga Triangle was a tiny territory on the border between German East Africa (present-day Tanzania) and Portuguese Mozambique occupied by the Portuguese forces in 1916. On May 29, 1916, stamps from