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
Zairean zaire zaïres" instead of "cinq millions "de" zaïres". The New Zaire (French: "Nouveau Zaïre"), symbol "NZ", ISO 4217 code ZRN, replaced the first zaire in 1993 at an exchange rate of 1 new zaire = 3,000,000 old zaires. It was subdivided into 100 new makuta (symbol: "NK"). This currency was only issued in banknote form and suffered from similarly high inflation to its predecessor. The new zaire was replaced by the Congolese franc again on 1 July 1998, at an exchange rate of 1 franc = 100,000 new zaires shortly after the Republic of Zaire became the Democratic Republic of the