Living off the river

This article is about the demographic features of the population of the Democratic Republic of the Congo, including ethnicity, education level, health of the populace, economic status, religious affiliations and other aspects of the population.

As many as 250 ethnic groups have been distinguished and named. The most numerous people are the Luba, Mongo, and Bakongo.

Although 700 local languages and dialects are spoken, the linguistic variety is bridged both by the use of French and the intermediary languages Kikongo, Tshiluba, Swahili, and Lingala.

The population of Africa has grown over the past century, and consequently shows a large youth bulge, further reinforced by a low life expectancy of below 50 years in most African countries. The population doubled in the period 1982–2009 and quadrupled from 1955–2009, according to United Nations estimates. The total population of Africa is estimated at 1 billion (as of November 2009.)

The Congo River (in the past also known as the Zaire River) is a river in Africa, and is the deepest river in the world, with measured depths in excess of 220 m (720 ft). It is the third largest river in the world by volume of water discharged. Additionally, its overall length of 4,700 km (2,920 mi) makes it the ninth longest river.

The Congo gets its name from the ancient Kingdom of Kongo which inhabited the lands at the mouth of the river. The Democratic Republic of the Congo and the Republic of the Congo, both countries lying along the river's banks, are named after it. Between 1971 and 1997 the government of then-Zaire called it the Zaire River.