Zaire Province a vassal state of the Kingdom of Portugal. In 1914, the Kongo monarchy was abolished after Portuguese suppression of several revolts. From 1885, Portuguese Angola included the district of Congo, which was split in 1919 into the districts of Cabinda and Zaire, respectively north and south of the Congo/Zaire River. During the 1961–1974 Angolan War of Independence, a large fraction of the Bakongo fled to the Republic of Zaire. Many of these refugees and their offspring returned after the Alvor Agreement recognised Angolan independence. Historical and cultural monuments include: M'Banza Congo (formerly São Salvador do Congo) is the provincial capital.
Zaire ebolavirus to be preceded by the word "species". The names of its members (Zaire ebolaviruses) are to be capitalized, are not italicized, and used without articles. The species was introduced in 1998 as "Zaire Ebola virus". In 2002, the name was changed to "Zaire ebolavirus". A virus of the genus "Ebolavirus" is a member of the species "Zaire ebolavirus" if: "Zaire ebolavirus" diverged from its ancestors between 1960-1976. The genetic diversity of "Ebolavirus" remained constant before 1900. Then, around the 1960s, most likely due to climate change or human activities, the genetic diversity of the virus dropped rapidly and most lineages