This research work is a contribution to the analysis of the path of European colonialism over Africa. It embodies the goal of answering this topic: Colonialism Streak on Africa's Emancipation: An Exploration of Joseph Conrad's Heart of Darkness and An Outpost of Progress. Pointing out Europeans and Africans' behaviour during that dark period in Africa, the novels under study reveal the evilness happening in the world. Their analytical and critical exploration is displayed through several points. It is mainly structured at first sight by a theoretical framework based on approaches related to the following theories: Reader-response critical theory, historical theoretical criticism, postcolonial theory and panafricanism literary theory. Then, it is followed by a Literature Review and an Overview of Joseph Conrad's Heart of Darkness and An Outpost of Progress. The study settles also the roots of the Africans emancipation problematic and finally put forward some alternatives to betterunderstand ways and means useful for the emancipation of the African people.