Congo River and "Congo" is the preferred English name in 19th-century literature, although references to "Zahir" or "Zaire" as the name used by the inhabitants remained common. The Democratic Republic of the Congo and the Republic of the Congo are named after it, as was the previous Republic of the Congo which had gained independence in 1960 from the Belgian Congo. The Republic of Zaire during 1971–1997 was also named after the river, after its name in French and Portuguese. The Congo's drainage basin covers , an area larger than India. The Congo's discharge at its mouth ranges from , with an
Zaire Province national language spoken in the province is Kikongo and the predominant ethnic group in the region is Bakongo. According to preliminary data from the General Census of Population and Housing conducted in May 2014, Zaire Province has currently 567,225 inhabitants, corresponding to 2.3 percent of the Angolan population. In this province, reside 285,333 women and 281,892 men, with 26.1% of the population living in rural areas and the majority, 73.9%, living in urban areas. The data also point to a population density of . Zaire Provincial Government consists of Governor José Joana André, and 3 Deputy Governors. Ângela Maria Botelho