This article argues the most important thesis elaborated against colonialisms and for promoting and fostering national liberations in the African Sub-Saharian context from Quobna Ottobah Cugoano and Olaudah Equiano - who lived in at the mid of the XVIII century and beginning of the XIX - to Kwame Nkrumah. The conclusion is devoted to problematize the question of ‘liberations’ ideologies’ from the historiographic interpretation point of view.
Keywords: Decolonizzaizone, pensiero politico, Africa, storia contemporanea, indipendenze, Cugoano, Nkrumah.