The author documents the slave trade, from its beginnings on the coast of West Africa in the fifteenth century, following the development of this massive shift of human lives across the centuries until its abolition in the late nineteenth century. Review: Hugh Thomas's The Slave Trade takes a big-picture view of New World slavery in its international context. The Portuguese and Spanish who first came to Africa, he writes, arrived in search of gold. They found it, but they also found social systems in which the ransom, buying, and selling of human beings had long been established. These systems had existed in European antiquity, and now they were revived when, shortly after making contact with Africa, the European nations began to establish colonies on the other side of the Atlantic; the horrible traffic continued well into the 19th century. Thomas mines vast archives and previously published histories to make this sweeping and remarkably useful synthesis.