The #AngolanWarOfIndependence began in 1961 on #ThisDayInHistory. Leftist/nationalist forces from #MPLA, #UNITA & #FNLA fought until 1974 (~70k people were killed), when a military coup in #Portugal toppled the #EstadoNovo dictatorship and announced the colonies would be freed.

"Oops, looks like they took 'fighting for your rights' a bit too literally 🤷‍♂️ #AngolanWarofIndependence #RevolutionGoneWrong" - Portuguese Prime Minister António de Oliveira Salazar

Jan 03, 1961 - A protest by agricultural workers in Baixa de Cassanje, Portuguese Angola, turns into a revolt, opening the Angolan War of Independence, the first of the Portuguese Colonial Wars.
https://en.wikipedia.org/wiki/Baixa_de_Cassanje

Baixa de Cassanje - Wikipedia

The Decolonization of Portuguese Africa: Metropolitan Revolution and the Dissolution of Empire : Norrie MacQueen : Free Download, Borrow, and Streaming : Internet Archive

This is an analytical study of Portuguese decolonization, dealing with all the Portuguese territories in Africa, especially Angola and Mozambique, but also...

Internet Archive