An unashamedly "big history," it charts the development of European, Near Eastern, and Chinese civilizations and the growing links between them by way of the Indian Ocean, the silk Roads, and the great steppe corridor (which crucially allowed horse riders to travel from Mongolia to the Great Hungarian Plain within a year). Along the way, it is also the story of the rise and fall of empires, the development of maritime trade, and the shattering impact of predatory nomads on their urban neighbours.

Above all, as this immense historical panorama unfolds, we begin to see in clearer focus those basic underlying factors--the acquisitive nature of humanity, the differing environments in which people live, and the dislocating effect of even slight climatic variation--which have driven change throughout the ages, and which help us better understand our world today.