Although Byzantium is known to history as the Eastern Roman Empire, scholars have long claimed that this Greek Christian theocracy bore little resemblance to Rome. Here, in a revolutionary model of Byzantine politics and society, Anthony Kaldellis reconnects Byzantium to its Roman roots, arguing that from the fifth to the twelfth centuries CE the Eastern Roman Empire was essentially a republic, with power exercised on behalf of the people and sometimes by them too. The Byzantine Republic recovers for the historical record a less autocratic, more populist Byzantium whose Greek-speaking citizens considered themselves as fully Roman as their Latin-speaking “ancestors.”

Kaldellis shows that the idea of Byzantium as a rigid imperial theocracy is a misleading construct of Western historians since the Enlightenment. With court proclamations often draped in Christian rhetoric, the notion of divine kingship emerged as a way to disguise the inherent vulnerability of each regime. The legitimacy of the emperors was not predicated on an absolute right to the throne but on the popularity of individual emperors, whose grip on power was tenuous despite the stability of the imperial institution itself. Kaldellis examines the overlooked Byzantine concept of the polity, along with the complex relationship of emperors to the law and the ways they bolstered their popular acceptance and avoided challenges. The rebellions that periodically rocked the empire were not aberrations, he shows, but an essential part of the functioning of the republican monarchy.

A comprehensive new history of the Eastern Roman Empire based on the science of the human past.

As modern empires rise and fall, ancient Rome becomes ever more significant. We yearn for Rome’s power but fear Rome’s ruin—will we turn out like the Romans, we wonder, or can we escape their fate? That question has obsessed centuries of historians and leaders, who have explored diverse political, religious, and economic forces to explain Roman decline. Yet the decisive factor remains elusive.

In New Rome, Paul Stephenson looks beyond traditional texts and well-known artifacts to offer a novel, scientifically minded interpretation of antiquity’s end. It turns out that the descent of Rome is inscribed not only in parchments but also in ice cores and DNA. From these and other sources, we learn that pollution and pandemics influenced the fate of Constantinople and the Eastern Roman Empire. During its final five centuries, the empire in the east survived devastation by natural disasters, the degradation of the human environment, and pathogens previously unknown to the empire’s densely populated, unsanitary cities. Despite the Plague of Justinian, regular “barbarian” invasions, a war with Persia, and the rise of Islam, the empire endured as a political entity. However, Greco-Roman civilization, a world of interconnected cities that had shared a common material culture for a millennium, did not.

Politics, war, and religious strife drove the transformation of Eastern Rome, but they do not tell the whole story. Braiding the political history of the empire together with its urban, material, environmental, and epidemiological history, New Rome offers the most comprehensive explanation to date of the Eastern Empire’s transformation into Byzantium.

A Times of London Book of the Year
Longlisted for the Runciman Award

“The most compelling fusion yet of narrative history with the recent findings of environmental research and scientific data. It will change the way we understand key events and transformations in the Eastern Empire.”—Anthony Kaldellis, author of Romanland

“[A] major contribution…Brings the world of New Rome alive with exceptional learning and a magnificent openness to modern scientific methods that breathe life into conventional narratives of political and social history.”—Peter Brown, New York Review of Books

“A sweeping survey of the disintegration of the western Roman empire and the emergence of Byzantium…This impressive chronicle offers an eye-opening perspective on a period of dramatic change.”—Publishers Weekly

Long before Rome fell to the Ostrogoths in 476 AD, a new city had risen to take its place as the beating heart of the empire, the glittering Constantinople, known as New Rome. In this strikingly original account of the collapse of the Western Roman Empire and emergence of Byzantium, Paul Stephenson offers a new interpretation of the forces that coalesced—dynastic, religious, climactic—to shift the center of power to the east. His novel, scientifically minded interpretation of antiquity's end presents evidence found not only in parchments and personalities, but also in ice cores and DNA.

From 395 to 700 AD, the empire in the east was subjected to a series of invasions and pandemics, confronting natural disasters and outbreaks in pathogens previously unknown to the empire’s densely populated, unsanitary cities. Politics, war, and religious strife sparked by the rise of Islam drove the transformation of Eastern Rome, but they do not tell the whole story. Deftly braiding the political history of the empire together with its material, environmental, and epidemiological history, New Rome offers a surprising new explanation of why Rome fell and how the Eastern Empire became Byzantium.