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.
27th Fighter Squadron York, flying the F-86, F-89 and F-94C aircraft while stationed at Griffis Air Force Base in Rome N.Y. until receiving the F-102 Delta Dagger in 1957. In October 1959, the 27th was transferred to Loring Air Force Base, Maine, where it assumed an air defense role flying F-106 Delta Darts in the Bangor Air Defense Sector. On 22 October 1962, before President John F. Kennedy told Americans that missiles were in place in Cuba, the squadron dispersed one third of its force, equipped with nuclear tipped missiles to Olmsted Air Force Base at the start of the Cuban Missile Crisis.