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
Food security in Mozambique non-existent. Mozambique suffers from multiple plagues. The most devastating by far for agriculture is the red locust, which is endemic in the Pungwe basin. Mozambique is particularly vulnerable to natural disasters such as droughts and floods, with a total of 15 over the last 25 years. These events greatly damaged the rural sector and the country’s overall economy. For example, the floods of 2000 affected some 2 million people, while the droughts of 1994 and 1996 affected 1.5 million people in the southern and central parts of the country. Cyclones in Mozambique occur during the cropping season, from October to