This article undertakes a systematic historical comparison between two landmark episodes of African demographic hemorrhage toward the Western world: the Atlantic slave trade (c. 1500–1867) and the contemporary Nigerian ‘japa’ syndrome that has accelerated since 2016. Deploying a theoretical framework that integrates world-systems analysis, dependency theory, and the concept of structural coercion, the article challenges the received analytical binary between ‘forced’ and ‘voluntary’ migration. It argues that while the Atlantic trade operated through physical violence and legal enslavement, the japa syndrome proceeds through the formally voluntary decisions of educated professionals. Both episodes share, among other things, structural feature, which include: externally driven demand for African human and labour resources, African elite complicity or governance failure in facilitating outward flows, and the systematic depletion of Africa’s productive population. Drawing on the Trans-Atlantic Slave Trade Database, International Organization for Migration data, World Bank diaspora statistics, and the historiographies of Manning, Rodney, Inikori, Eltis, and Thornton, the article constructs a comparative analytical matrix across five dimensions: agency, demand structure, state complicity, economic consequence, and demographic impact. The article concludes that the distinction between coerced and voluntary African migration collapses under structural scrutiny and that both periods constitute historically rhyming expressions of a durable global political economy that has consistently extracted value from African populations.