It argues that the revival of anti-slavery activism in the late 1880s and its continuation throughout the first half of the 20th century was a result of imperial and humanitarian currents striving for international recognition. Slavery in Africa became a transitional problem which induced a wide range of factors to engage in strategic and often selective cooperation across national borders, based on a shared belief in their own advanced civilization and in the moral legitimacy of humanitarian imperilism. This emphasizes why transnational perspectives should pay attention to power looking at anti-slavery activism beyond Britain. Imperialism disrupted traditional African ways of life, political organization, and social norms. European imperialism turned subsistence farming into large scale commodity exports and patriarchal social structure into European dominated hierarchies and imposed Christianity.