GENERAL KNOWLEDGE

Detailed explanation-1: -The river was known as Zaire during the 16th and 17th centuries; Congo seems to have replaced Zaire gradually in English usage during the 18th century, 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.

Detailed explanation-2: -The Democratic Republic of the Congo (French: République démocratique du Congo), also often referred to as DRC, RDC, DR Congo, Congo or Congo-Kinshasa, and formerly as Zaire (or Zaïre in French), is the third largest country on the African continent.

Detailed explanation-3: -Zaire, officially the Republic of Zaire (French: République du Zaïre) was the name of a country that is now called the Democratic Republic of the Congo.