The Machinery of Empire

CHAPTER 7 · 1229–1259 · The Mongol Empire, 1206–1294

Pull the camera back — the map is now the point. By the 1250s perhaps a million Mongols rule perhaps a hundred million people, a ratio no occupation force can hold by force. This chapter is how: not the army, but the plumbing. First the yam — follow the long arrow — relay stations every 25–40 kilometers on every road of the empire, stocked with remounts, fodder and riders; an urgent dispatch, its bearer strapped and belled, moves 300 kilometers a day, Danube to Korea in weeks. Second, the census: heads, herds and households counted from China (1235–36) to the Rus principalities (1257–59) — the

The turn: The silver fountain of Karakorum.

This chapter is one scene of an interactive atlas: the map repaints as the dates advance, campaigns draw themselves, and every chapter argues its causes and consequences — then a field exam asks you to prove it on the map.