It was a time of revolution. The Roman Revolution describes the little known "crisis of the third century", and how it led to a revolutionary new Roman Empire. Long before the more famous collapse of the Western Roman Empire in the fifth century, in the years between AD 235-275, barbarian invasions, civil war, and plague devastated ancient Rome.

When we think of “ancient Romans” today, many picture the toga-clad figures of Cicero and Caesar, presiding over a republic, and then an empire, before seeing their world collapse at the hands of barbarians in the fifth century AD. The Romans does away with this narrow vision by offering the first comprehensive account of ancient Rome over the course of two millennia. Prize-winning historian Edward J. Watts recounts the full sweep of Rome’s epic past: the Punic Wars, the fall of the republic, the coming of Christianity, and more.

The Crusades shook the world. But why did they happen? Their origins are revealed in a new light. As part of a medieval world war that stretched from Asia to Europe. At its center was an ancient empire Byzantium. Told for the first time as a single, linked narrative are three great events that changed history: The fall of Byzantium in the 11th century, the epic campaign of the First Crusade and the origins of modern Turkey. Nick Holmes not only presents the First Crusade in a wider global context but he also puts forwards new interpretations of the original sources.

By the middle of the second century BCE, after nearly one hundred years of warfare, Rome had exerted its control over the entire Mediterranean world, forcing the other great powers of the region—Carthage, Macedonia, Egypt, and the Seleucid empire—to submit militarily and financially. But how, despite its relative poverty and its frequent numerical disadvantage in decisive battles, did Rome prevail? Michael J. Taylor explains this surprising outcome by examining the role that manpower and finances played.

Justinian is a radical reassessment of an emperor and his times. In the sixth century CE, the emperor Justinian presided over nearly four decades of remarkable change, in an era of geopolitical threats, climate change, and plague. From the eastern Roman—or Byzantine—capital of Constantinople, Justinian’s armies reconquered lost territory in Africa, Italy, and Spain. But these military exploits, historian Peter Sarris shows, were just one part of a larger program of imperial renewal.