Understanding Byzantium: Identity, Legacy, and Historical Debate

The question of what to call the eastern half of the Roman Empire after 476 CE has perplexed historians, frustrated students, and tantalized scholars for centuries. When the last western emperor, Romulus Augustulus, was deposed by the Germanic chieftain Odoacer in that year, the eastern half of the empire—centered on Constantinople, that magnificent city founded by Constantine the Great on the site of ancient Byzantium—continued to function, to flourish, and to endure. Yet this persistence raised an immediate terminological problem that we have never fully resolved: how should we name this entity that stubbornly maintained Roman traditions, Roman legal structures, and Roman political claims while simultaneously developing in directions that would have been unrecognizable to Augustus or even to Hadrian? The name "Byzantine Empire" that we commonly use today was not coined until nearly a century after the empire's final destruction in 1453, and the very term carries baggage that complicates our understanding of this remarkable civilization. To understand Byzantium, we must first grapple with the question of nomenclature—and in doing so, we will discover that how we name something inevitably shapes how we perceive it.

The designation "Byzantine" derives from the ancient Greek city of Byzantion, which occupied the strategic site where Europe meets Asia across the narrow Bosphorus strait. When Constantine the Great chose this location for his "New Rome" in 330 CE, he did not rename the city Byzantium; rather, the city retained its ancient designation while gradually acquiring the title Constantinople, the City of Constantine. The term "Byzantine" as applied to the medieval eastern Roman Empire was invented by the German historian Hieronymus Wolf in 1557, nearly a century after the Ottoman conquest of Constantinople, and was popularized through the eighteenth and nineteenth centuries as Western European scholars sought to distinguish what they perceived as the decadent, Oriental, and theologically obsessed successor state from the classical Roman civilization they admired. The term carried pejorative undertones from its inception: to call something "Byzantine" in early modern usage was to suggest complexity for its own sake, administrative corruption, religious fanaticism, and cultural degeneration. These negative connotations persisted in popular usage long after scholars recognized their intellectual inadequacy, and even today the word retains a faintly disparaging flavor in colloquial English when we describe something as "byzantine bureaucracy" or "byzantine politics."

Yet the Byzantines themselves never called their empire "Byzantine." They called it the Roman Empire—Romaia in Greek, or simply Romania, the Land of the Romans—and they called themselves Romans, Romaioi. This self-designation was not merely a legal fiction maintained for political legitimacy, though it certainly served that purpose; it represented a genuine and deeply held sense of identity that connected medieval Constantinople to the Rome of Augustus, Trajan, and the Antonines. When Emperor Constantine IX Monomachos addressed his subjects in the eleventh century, he spoke to them as Romans. When the theologian Michael Psellos criticized the imperial court in his Chronographia, he thought of himself as writing Roman history. When the monk who chronicled the epic defense of Constantinople against the Avars in 626 described the city's salvation, he celebrated the triumph of the Romans over their enemies. For over a thousand years, from the reign of Constantine I to the fall of Constantinople in 1453, the people of the eastern Mediterranean maintained that they were Romans, that their empire was the Roman Empire, and that their civilization represented the continuation and transformation of classical Roman culture. Understanding this self-perception is essential to grasping the Byzantine worldview, even as we employ the term "Byzantine" as a scholarly convention for the sake of clarity.

The tension between Byzantine self-understanding and modern Western categorization points to a fundamental question that has animated scholarly debate for generations: was the Byzantine Empire a continuation of the Roman Empire, a transformation of it, or something entirely new that merely inherited Roman forms while developing an entirely different substance? This question, often called the "Byzantine question" or the problem of Roman continuity, has no single satisfactory answer, and different historians have emphasized different aspects of the evidence to support different conclusions. To understand the complexity of this historiographical debate, we must examine both the arguments for continuity and the arguments for transformation, recognizing that the truth likely lies somewhere in the sophisticated middle ground that acknowledges both the genuine connections to antiquity and the profound innovations that distinguish medieval Constantinople from its ancient predecessor.

The case for Roman continuity rests on substantial evidence. Legally, the Byzantine Empire maintained and developed the Corpus Juris Civilis, the great codification of Roman law completed under Justinian I in the sixth century. This legal tradition, preserved and transmitted through Byzantine scholars, would become the foundation of legal systems across medieval and modern Europe, from the Kingdom of Jerusalem to the Napoleonic Code. Institutionally, the Byzantine bureaucracy preserved many elements of Roman administrative practice, including the senate (now transformed into a body of high-ranking officials), the quaestor, the master of offices, and various other offices whose titles echoed their classical antecedents. The imperial ideology of Constantinople remained deeply Roman: emperors claimed authority as the successors of Augustus, celebrated Roman military victories, and maintained the fiction—sometimes more, sometimes less—of governing an empire that encompassed the known world. Even the physical continuity was striking: Constantinople itself was built on the site of ancient Byzantion, incorporated elements of Roman urban planning, and preserved monuments and memories of the classical past. The Byzantines read and revered classical authors, from Homer to Thucydides, from Virgil to Cicero, and Byzantine education remained grounded in the study of Greek and Latin literature, philosophy, and rhetoric. In these and many other ways, the eastern Roman Empire maintained visible and tangible connections to its Roman heritage.

Yet the case for transformation is equally compelling, and many of the same phenomena that demonstrate continuity simultaneously reveal fundamental changes. The Greek language that replaced Latin as the dominant tongue of administration and culture in the eastern provinces by the seventh century represented a profound shift in the cultural identity of the empire. What had begun as a bilingual Greek and Latin administration under the early emperors gradually became a predominantly Greek-speaking realm, even as it maintained its Roman political identity. The Christianization of the empire, beginning with Constantine's Edict of Milan in 313 and becoming virtually complete by the sixth century, transformed Roman religion from a polytheistic state cult to a monotheistic Christianity that permeated every aspect of Byzantine society and politics. The barbarian invasions of the fifth and sixth centuries, which destroyed the western Roman Empire and subjected the eastern provinces to sustained pressure, reshaped the empire's territorial extent, military organization, and ethnic composition. The transformation of Roman senators into Byzantine court officials, the emergence of new social classes such as the military aristocracy and the theme system, the development of new art forms and architectural styles, and the profound influence of Greek philosophy and theology on Byzantine thought—all of these developments combi