Diocletian Divides the Empire

285 CE — Roman Empire, Rome

Today: Split, Croatia (his palace) — and the whole empire

Emerging from fifty years of near-collapse, Diocletian concluded the empire had simply grown too large for one man to defend and split its administration between east and west, each with its own emperor. He doubled the army, expanded the bureaucracy, fixed prices by decree to stop inflation — and the price edict failed, because goods vanished from the market. The reforms bought Rome another two centuries at the cost of a heavier, more rigid state. The line he drew across the empire is roughly the line that still separates Catholic from Orthodox Europe.

Worth knowing: Diocletian did what no Roman emperor had done: he retired. Living out his years growing vegetables in a fortified palace on the Adriatic, he reportedly told a delegation begging him to return that if they could see his cabbages, they would not ask.

Pattern: Institutional sclerosis — Rules and bodies outlive their function; rent-seeking and complexity rise while returns on added complexity fall.

Entry 82 of 240 in Precedent, a walk through the whole human story in order.