Written by one of the world's foremost historians of human migration, Peoples and Empires is the story of the great European empires--the Roman, the Spanish, the French, the British--and their colonies, and the back-and-forth between "us" and "them," culture and nature, civilization and barbarism, the center and the periphery. It's the history of how conquerors justified conquest, and how colonists and the colonized changed each other beyond all recognition.