The Kingdom of Portugal was created as a by-product of the Christian Reconquest of Hispania. With no geographical raison d etre and no obvious roots in its Roman, Germanic, or Islamic pasts, it for long remained a small, struggling realm on Europe s outer fringe. Then, in the early fifteenth century, this unlikely springboard for Western expansion suddenly began to accumulate an empire of its own, eventually extending more than halfway around the globe. The History of Portugal and the Portuguese Empire, drawing particularly on historical scholarship postdating the 1974 Portuguese Revolution,...