a. Renamed from "Democratic Republic of the Congo" (République démocratique du Congo) on 27 October 1971. b. Changed from "Léopoldville" in 1966. c. Zaire became a de jure one-party state on December 23, 1970,[3] but had been a de facto one-party state since May 20, 1967, the date on which the MPR (Mouvement Populaire de la Revolution) was established. Zaire formally adopted a multiparty system on April 24, 1990,[4] when Mobutu delivered a speech proclaiming the end of the one-party system. The country adopted multipartyism de jure with the passage of Law No. 90-002 of July 5, 1990, which amended its constitution accordingly.[5] d. 1990–1997.
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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. It used this name from 27 November 1971 to 17 May 1997. The name "Zaire" comes from a Portuguese corruption of the Kongo word nzare, meaning "river".