Which African nations participated in the Portuguese Colonial War? Which African region did all of #1 belong to? Do all nations in #2 share official language?
Portuguese Colonial War
 The current African nations of Angola, Guinea-Bissau and Mozambique participated in the the Portugese Colonial War. The Portugese Colonial War was a decisive struggle in Lusophone Africa. Lusaphone countries are those that include Portugese as an official language.
1961–1974 armed conflicts in Africa between Portugal and independence movements
Do all of the African regions that participated in the Portugese Colonial War share an official language?