Histories

Polybius, an Achaean statesman deported to Rome as a hostage after Rome's defeat of Macedon in 168 BC, used his decades of enforced residence among the Roman elite, including his close friendship with the general Scipio Aemilianus, to write a history explaining how Rome achieved dominance over the entire Mediterranean world in the span of just fifty-three years, from 220 to 167 BC. He traces connected causes across interlinked Mediterranean events rather than treating each region's history separately, and devotes a famous digression to analyzing the Roman constitution as a stable mixture of monarchic, aristocratic, and democratic elements that he credits with Rome's resilience against the internal decay he believed pure constitutions inevitably suffer. Polybius intended his history as practically useful instruction for statesmen navigating a world now shaped by Roman power.