The Atlantic slave trade, spanning the 15th to 19th centuries, reshaped global demographics and economies. European powers forcibly transported millions of Africans to the Americas, fueling colonial expansion and driving the triangular trade system. This unit explores the trade's origins, key routes, and economic impacts. It examines social and cultural consequences, forms of resistance, and the lasting legacy on African societies and the diaspora. Contemporary relevance and key figures are also discussed.