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The Byzantine Empire is the term conventionally used to describe the Greek-speaking Roman Empire during the Middle Ages, centred at its capital in Constantinople. In certain specific contexts, usually referring to the time before the fall of the Western Roman Empire, it is also often referred to as the Eastern Roman Empire. There is no consensus on the starting date of the Byzantine period. Some place it during the reign of Diocletian (284-305) due to the administrative reforms he introduced, dividing the empire into a pars Orientis and a pars Occidentis. Others place it during the reign of Theodosius I (379-395) and Christendom's victory over paganism, or, following his death in 395, with the division of the empire into Western and Eastern halves. Others place it yet further in 476, when the last western emperor, Romulus Augustus, was forced to abdicate, thus leaving to the emperor in the Greek East sole imperial authority. In any case, the changeover was gradual and by 330, when Constantine I inaugurated his new capital, the process of Hellenization and Christianization was well underway.

The term "Byzantine Empire"

Main article: Names of the Greeks

The name Byzantine Empire is derived from the original Greek name for Constantinople; Byzantium. The name is a modern term and would have been alien to its contemporaries. The Empire's native Greek name was Ῥωμανία Romanía or Βασιλεία Ῥωμαίων Basileía Romaíon, a direct translation of the Latin name of the Roman Empire, Imperium Romanorum. The term Byzantine Empire was invented in 1557, about a century after the fall of Constantinople by German historian Hieronymus Wolf, who introduced a system of Byzantine historiography in his work Corpus Historiae Byzantinae in order to distinguish ancient Roman from medieval Greek history without drawing attention to their ancient predecessors. Standardization of the term did not occur until the 18th century, when French authors such as Montesquieu began to popularize it. Hieronymus himself was influenced by the rift caused by the 9th century dispute between Romans (Byzantines as we render them today) and Franks, who, under Charlemagne's newly formed empire, and in concert with the Pope, attempted to legitimize their conquests by claiming inheritance of Roman rights in Italy thereby renouncing their eastern neighbours as true Romans. The Donation of Constantine, one of the most famous forged documents in history, played a crucial role in this. Henceforth, it was fixed policy in the West to refer to the emperor in Constantinople not by the usual "Imperator Romanorum" (Emperor of the Romans) which was now reserved for the Frankish monarch, but as "Imperator Graecorum" (Emperor of the Greeks) and the land as "Imperium Graecorum", "Graecia", "Terra Graecorum" or even "Imperium Constantinopolitanus".

This served as a precedent for Wolf who was motivated, at least partly, to re-interpret Roman history in different terms. Nevertheless, this was not intended in a demeaning manner since he ascribed his changes to historiography and not history itself.

Later a derogatory use of 'Byzantine' was developed.

"Byzantium may be defined as a multi-ethnic empire that emerged as a Christian empire, soon comprised the Hellenized empire of the East and ended its thousand year history, in 1453, as a Greek Orthodox state: An empire that became a nation, almost by the modern meaning of the word".1

In the centuries following the Arab and Lombard conquests in the 7th century, its multi-ethnic (albeit not multi-national) nature remained even though its constituent parts in the Balkans and Asia Minor contained an overwhelmingly Greek population. Ethnic minorities and sizeable communities of religious heretics often lived on or near the borderlands, the Armenians being the only sizeable one.

Byzantines identified themselves as Romaioi (Ρωμαίοι - Romans) which had already become a synonym for a Hellene (Έλλην - Greek), and more than ever before were developing a national consciousness, as residents of Ρωμανία (Romania, as the Byzantine state and its world were called). This nationalist awareness is reflected in literature, particularly in the acritic songs, where frontiersmen (ακρίτες) are praised for defending their country against invaders, of which most famous is the heroic or epic poem Digenis Acritas.

The official dissolution of the Byzantine state in the 15th century did not immediately undo Byzantine society. During the Ottoman occupation Greeks continued to identify themselves as both Ρωμαίοι (Romans) and Έλληνες (Hellenes), a trait that survived into the early 20th century and still persists today in modern Greece, albeit the former has now retreated to a secondary folkish name rather than a national synonym as in the past.


Map of the Roman empire c. 379AD, showing the praetorian prefectures of Gaul, Italy, Illyricum and Oriens, roughly analogous to the four Tetrarchs' zones of influence after Diocletian's reforms.

Caracalla's decree in 212, the Constitutio Antoniniana, extended citizenship outside of Italy to all free adult males in the entire Roman Empire, effectively raising provincial populations to equal status with the city of Rome itself. The importance of this decree is historical rather than political. It set the basis for integration where the economic and judicial mechanisms of the state could be applied around the entire Mediterranean as was once done from Latium into all of Italy. Of course, integration did not take place uniformly. Societies already integrated with Rome such as Greece were favored by this decree, compared with those far away, too poor or just too alien such as Britain, Palestine or Egypt.

The division of the Empire began with the Tetrarchy (quadrumvirate) in the late 3rd century with Emperor Diocletian, as an institution intended to more efficiently control the vast Roman Empire. He split the Empire in half, with two emperors (Augusti) ruling from Italy and Greece, each having as co-emperor of younger colleague of their own (Caesares). After Diocletian's voluntary abandon, the Tetrarchic system began soon to crumble: anyway, the division continued in some form into the 4th century, until 324 when Constantine the Great killed his last rival and became the sole Emperor of the Empire. Constantine decided to found a new capital for himself and chose Byzantium for that purpose. The rebuilding process was completed in 330.

Emperor Constantine I the Great

Constantine renamed the city Nova Roma but in popular use it was called Constantinople (in Greek, Κωνσταντινούπολις, Constantinoúpolis, meaning Constantine's City). This new capital became the centre of his administration. Constantine deprived the single preatorian prefect of his civil functions, introducing regional prefects with civil authority. During 4th centuries four great "regional prefectures" were created also.

Constantine was also probably the first Christian emperor. The religion which had been persecuted under Diocletian became a "permitted religion", and steadily increased his power as years passed, apart from a short-lived return to Pagan predominance with emperor Julian. Although the empire was not yet "Byzantine" under Constantine, Christianity would become one of the defining characteristics of the Byzantine Empire, as opposed to the pagan Roman Empire.

Constantine also introduced a new stable gold coin, the solidus, which was to become the standard coin for centuries, not only in Byzantine Empire.

Another defining moment in the history of the Roman/Byzantine Empire was the Battle of Adrianople in 378 in which the Emperor Valens himself was killed by the Visigoths, and the best Roman legions remained were annihilated forever. This defeat has been proposed by some authorities as one possible date for dividing the ancient and medieval worlds. The Roman empire was divided further by Valens' successor Theodosius I (also called "the great"), who had ruled both parts since 392: following the dynastic principle well established by Constantine, in 395 he gave the two halves to his two sons Arcadius and Honorius; Arcadius became ruler in the East, with his capital in Constantinople, and Honorius became ruler in the west, with his capital in Ravenna. Theodosius was the last Roman emperor whose authority covered the entire traditional extent of the Roman Empire. At this point it is common to refer to the empire as "Eastern Roman" rather than "Byzantine."

Early history

The Eastern Empire was largely spared the difficulties of the west in the 3rd and 4th centuries (see Crisis of the Third Century), in part because urban culture was better established there and the initial invasions were attracted to the wealth of Rome. Throughout the 5th century various invasions conquered the western half of the empire, but at best could only demand tribute from the eastern half. Theodosius II enchanced the walls of Constantinople, leaving the city impenetrable to attacks: it was to be preserved from foreign conquest until 1204. To spare his part of Empire the invasion of the Huns of Attila, Theodosius gave them subsidies of gold: in this way he favoured those merchants living in Constantinople who traded with the barbarians. His successor Marcian refused to continue to pay the great sum, but Attila had already diverted his attention to the Western Empire and died in 453. His Empire collapsed and Constantinople was free from his menace forever, starting a profitable relationship with the remaining Huns, who often fought as mercenaries in Byzantine armies of the following centuries. In this age the true chief in Constantinople was the Alan general Aspar. Leo I managed to free himself from the influence of the barbarian chief favouring the rise of the Isauri, a crude semi-barbarian tribe living in Roman territory, in southern Anatolia. Aspar and his son Ardabur were murdered in a riot in 471, and thenceforth Constantinople was to be free from foreign influence for centuries. Leo was also the first emperor to receive the crown not from a general or an officer, as in the Roman tradition, but from the hands of the patriarch of Constantinople. This habit became mandatory as time passed, and in the Middle Ages the religious characteristic of the coronation had totally substituted the old form.

First Isaurian emperor was Tarasicodissa, who was married by Leo to his daughter Ariadne (466) and ruled as Zeno I after the death of Leo I's son, Leo II (autumn of 474). Zeno was the emperor when the empire in the west finally collapsed in 476, as the barbarian general Odoacer deposed emperor Romulus Augustus without replacing him with another puppet. In 468 an attempt by Leo I to conquer again Africa from the Vandals had failed mercelessly, showing how feeble were the military capabilities of the Eastern Empire. At that time the Western Roman Empire was already restricted to the sole Italy: Britain had fell to Angles and Saxons, Spain to Visigoths, Africa to Vandals and Gaul to Franks. To recover Italy Zeno could only negotiate with the Ostrogoths of Theodoric, who had been settled in Moesia: he sent the barbarian king in Italy as magister militum per Italiam ("chief of staff for Italy"). Since the fall of Odoacer in 493 Theodoric, who had lived in Constantinople in his youth, ruled over Italy of his own, though saving a merely formal obedience to Zeno. He revealed as the most powerful Germanic king of that age, but his successors were greatly inferior to him and their kingdom of Italy started to decline in the 530s.

In 475 Zeno was deposed by a plot who elevated one Basiliscus (the general defeated in 468) to the throne, but twenty months after Zeno was again emperor. But he had to face the menace coming from his Isaurian former official Illo and the other Isaurian Leontius, who was also elected rival emperor. The Isaurian prominence ended when an aged civil officer of Roman origin, Anastasius I, became emperor in 491 and definitively defeated them in 498, after a long war.

Anastasius revealed himself to be an energic reformer and able administrator. He perfected Constantine I's coin system by definitively setting the weight of the copper follis, the coin used in most everyday transactions. He also reformed the taxation system: at his death the State Treasury contained the enormous sum of 320,000 pounds of gold.

The age of Justinian I

The reign of Justinian I, which began in 527, saw a period of extensive Imperial conquests of former Roman territories (indicated in green on the map below). The 6th century also saw the beginning of a long series of conflicts with the Byzantine Empire's traditional early enemies, such as the Persians, Slavs and Bulgars. Theological crises, such as the question of Monophysitism, also dominated the empire.

Justinian I had already probably exerted effective control under the reign of his predecessor, Justin I (518-527). This latter was a former officer in the Imperial Army who had been chief of the Guards to Anastasius I, and had been proclaimed emperor (when almost 70) after Anastasius's death. Justinian was the son of a peasant from Illyricum, but also a nephew of Justin's, and later made his adoptive son. Justinian would become one of the most refined spirits of his century, inspired by the dream of the re-creation of Roman rule over all the Mediterranean world. He reformed the administration and the law, and, with the help of brilliant generals such as Belisarius and Narses, temporarily regained some of the lost Roman provinces in the west, conquering much of Italy, North Africa, and a small area in southern Spain.

In 532 Justinian secured for the Empire peace on the Eastern frontier by signing an "eternal peace" treaty with the Sassanid Persian king Khosrau I; however this required in exchange the payment of a huge annual tribute in gold.

Justinian's conquests in the West began in 533, when Belisarius was sent to reclaim the former province of Africa with a small army of some 18,000 men, mainly mercenaries. Whereas an earlier 468 expedition had been a dismaying failure, this new venture was to prove a success, the kingdom of the Vandals at Carthage lacking the strength of former times under King Gaiseric. The Vandals surrendered after a couple of battles, and Belisarius returned to a Roman triumph in Constantinople with the last Vandal king, Gelimer, as his prisoner. However the reconquest of North Africa would take a few more years to stabilize and it was not until 548 that the main local independent tribes were subdued.

Map of the Byzantine Empire around 550

In 535 Justinian launched his most ambitious campaign, the reconquest of Italy, at that time still ruled by the Ostrogoths. He dispatched an army to march overland from Dalmatia while the main contingent, transported on ships and again under the command of Belisarius, disembarked in Sicily and conquered the island without much difficulty. The marches on the Italian mainland were initially victorious and the major cities, including Naples, Rome and the capital Ravenna, fell one after the other. The Goths seemingly defeated, Belisarius was recalled to Constantinople in 541 by Justinian, bringing with him the Ostrogoth king Witiges as a prisoner in chains. However, the Ostrogoths and their supporters were soon reunited under the energic command of Totila. The ensuing Gothic Wars were an exhausting series of sieges, battles and retreats which consumed almost all the Byzantine and Italian fiscal resources, impoverishing much of the countryside. Belisarius was recalled by Justianian, who had lost trust in his preferred commander. At a certain point the Byzantines seemed on the verge of losing all the positions they had gained. After having neglected to provide sufficient financial and logistical support to the desperate troops under Belisarius's former command, in the summer of 552 Justinian gathered a massive army of 35,000 men, mostly Asian and Germanic mercenaries, to be applied to the supreme effort. The astute and diplomatic eunuch Narses was chosen for the command. Totila was crushed and killed at Busta Gallorum; Totila's successor, Teias, was likewise defeated at the Battle of Mons Lactarius (central Italy, October 552). Despite of continuing resistance from a few Goth garrisons, and two subsequent invasions by the Franks and Alamanni, the war for the reconquest of the Italian peninsula was at an end.

Justinian's program of conquest was further extended in 554 when a Byzantine army managed to sieze a small part of Spain from the Visigoths. All the main Mediterranean islands were also now under the Byzantine control.

Aside from these conquests, Justinian updated the ancient Roman legal code in the new Corpus Juris Civilis (although it is notable that these laws were still written in Latin, a language which was becoming archaic and poorly understood even by those who wrote the new code). Under Justinian's reign, the Church of Hagia Sofia ("Holy Wisdom") was constructed in the 530s. This church would become the centre of Byzantine religious life and the centre of the Eastern Orthodox form of Christianity. The sixth century was also a time of flourishing culture (although Justinian closed the university at Athens), producing the epic poet Nonnus, the lyric poet Paul the Silentiary, the historian Procopius and the natural philosopher John Philoponos, among other notable talents.

The conquests in West meant the other parts of the Empire were left almost unguarded, although Justinian was a great builder of fortifications throughout all his reign and the Byzantine territories. Khosrau I of Persia had as early as 540 broken the pact previously signed with Justinian, destroying Antiochia and Armenia: the only way the emperor could devise to forestall him was to increase the sum paid out every year. The Balkans were subjected to repeated incursions, where Slavs had first crossed the imperial frontiers during the reign of Justin I, taking advantage of the sparsely-deployed Byzantine troops to press on as far as the Gulf of Corinth. The Kutrigur Bulgars had also attacked in 540. The Slavs then invaded Thrace in 545 and in 548 assaulted Dyrrachium, an important port on the Adriatic Sea. In 550 the Sclaveni pushed on as far to reach within 65 kilometers of Constantinople itself. In 559 the Empire found itself unable to repel a great invasion of Kutrigurs and Sclaveni: divided in three columns, the invaders reached the Thermopylae, the Gallipoli Peninsula and the suburbs of Constantinople. The Slavs come back worried more by the intact power of the Danube Roman fleet and of the Utigurs, paid by the Romans themselves, than the resistance of an ill-prepared Imperial army. This time the Empire was safe, but in the following years the Roman suzerainty in the Balkans was to be almost totally overwhelmed.

Soon after the death of Justinian in 565, the Germanic Lombards, a former imperial foederati tribe, invaded and conquered much of Italy. The Visigoths conquered Cordoba, the main Byzantine city in Spain, first in 572 and then definitively in 584: the last Byzantine strongholds in Spain were swept away twenty years later. The Turks, one of the deadliest enemies of future Byzantium, had appeared in Crimea, and in 577 a horde of some 100,000 Slavs had invaded Thrace and Illyricum. Sirmium, the most important Roman city on the Danube, was lost in 582, but the Empire managed to mantain control of the river for several more years, though it increasingly lost control of the inner provinces.

Justinian's successor, Justin II, refused to pay the tribute to the Persians. This resulted in a long and harsh war which lasted until the reign of his successors Tiberius II and Maurice, and focused on the control over Armenia. Fortunately for the Byzantines, a civil war broke out in the Persian Kingdom: Maurice was able take advantage of his friendship with the new king Khosrau II (whose disputed accession to the Persian throne had been assisted by Maurice) in order to sign a favourable peace treaty in 591, which gave the Empire control over much of Persian Armenia. Maurice reorganized the remaining possessions in the West into two Exarchates, those of Ravenna and Carthage, attempting to increase their capability in self-defence and delegating them much of the civil authority.

The Avars and later the Bulgars overwhelmed much of the Balkans, and in the early 7th century the Persians invaded and conquered Egypt, Palestine, Syria and Armenia. The Persians were defeated and the territories were recovered by the emperor Heraclius in 627, but the unexpected appearance of the newly-converted and united Muslim Arabs took by surprise an empire exhausted by the titanic effort against Persia, and the southern provinces were all overrun. The Empire's most catastrophic defeat of this period was the Battle of Yarmuk, fought in Syria. Heraclius and the military governors of Syria were slow to respond to the new threat, and Byzantine Mesopotamia, Syria, Egypt, and the Exarchate of Africa were permanently incorporated into the Muslim Empire in the 7th century, a process which was completed with the fall of Carthage to the Caliphate in 698.

The Lombards continued to expand in northern Italy, taking Liguria in 640 and conquering most of the Exarchate of Ravenna in 751, leaving the Byzantines with control only of small areas around the toe and heel of Italy, plus some semi-independent coastal cities like Venice, Naples, Amalfi and Gaeta.

The fight for survival

The empire's loss of territory was offset to a degree by consolidation and an increased uniformity of rule. The emperor Heraclius fully Hellenized the empire by making Greek the official language, thus ending the last remnants of Latin and ancient Roman tradition within the Empire. The use of Latin in government records, Latin titles such as Augustus and the concept of the empire being one with Rome fell into abeyance, allowing the empire to pursue its own identity. Many historians mark the sweeping reforms made during the reign of Heraclius as the breaking-point with Byzantium's ancient Roman past; it is common to refer to the empire as "Byzantine" instead of "East Roman" from this point onwards. Religious rites and expression within the empire were now also noticeably different from the practices upheld in the former imperial lands of western Europe. Within the empire, the southern Byzantine provinces differed significantly in culture and practice from those in the north, observing Monophysite Christianity rather than Chalcedonian Orthodox. The loss of the southern territories to the Arabs further strengthened Orthodox practices in the remaining provinces.

Constans II (reigned 641 - 668) sub-divided the empire into a system of military provinces called thémata (themes) in an attempt to improve local responses to the threat of constant assaults. Outside of the capital urban life declined, while Constantinople grew to become the largest city in the Christian world. Several attempts to conquer Constantinople by the Arabs failed in the face of the Byzantines' superior navy, the Byzantines' monopoly over the still-mysterious incendiary weapon (Greek fire), the strong city walls, and the skill of Byzantine generals and warrior-emperors such as Leo III the Isaurian (reign 717 - 741). Once the assaults were repelled, the empire's recovery resumed.

In his landmark work The History of the Decline and Fall of the Roman Empire, the 18th century historian Edward Gibbon depicted the Byzantine Empire of this time as effete and decadent. However, by an alternate examination the Byzantine Empire can be regarded instead a military superpower of the early Middle Ages. Factors contributing to this view include its heavy cavalry (the cataphracts), subsidization (albeit inconsistent) of a free and well-to-do peasant class forming the basis for cavalry recruitment, the extraordinarily in-depth defense systems (the themes), the use of subsidies to play its enemies against one another, prowess at intelligence-gathering, a communications and logistics system based on mule trains, a superior navy (although often under-funded), and rational military strategies and doctrines (not dissimilar to those of Sun Tzu) that emphasized stealth, surprise, swift maneuvering and the marshalling of overwhelming force at the time and place of the Byzantine commander's choosing.

After the siege of 717 in which the Arabs suffered horrific casualties, the Caliphate were no longer a serious threat to the Byzantine heartland. It would take a different civilization, that of the Seljuk Turks, to finally drive the imperial forces out of eastern and central Anatolia.

The 8th century was dominated by the controversy and religious division over iconoclasm. Icons were banned by Emperor Leo III, leading to revolts by iconophiles throughout the empire. After the efforts of Empress Irene, the Second Council of Nicaea met in 787 and affirmed that icons could be venerated but not worshipped. Irene also attempted a marriage alliance with Charlemagne, which would have united the two empires, thus recreating the Roman Empire (the two European empires both claimed the title) and creating a European superpower comparable to ancient Rome. These plans were destroyed when Irene was deposed. The iconoclast controversy returned in the early 9th century, only to be resolved once more in 843 during the regency of Empress Theodora (9th century). These controversies further contributed to the disintegrating relations with the Roman Catholic Church and the Holy Roman Empire, both of which continued to increase their independence and power.

Golden era

Emperor Basil II the BulgarSlayer (r. 976-1025AD).

The empire reached its height under the Macedonian emperors of the late 9th, 10th and early 11th centuries. During these years the Empire held out against pressure from the Roman church to remove Patriarch Photios, and gained control over the Adriatic Sea, parts of Italy, and much of the land held by the Bulgarians. The Bulgarians were completely defeated by Basil II in 1014. The Empire also gained a new ally (yet sometimes also an enemy) in the new Varangian state in Kiev, from which the empire received an important mercenary force, the Varangian Guard.

In 1054 relations between Greek-speaking Eastern and Latin-speaking Western traditions within the Christian Church reached a terminal crisis. There was never a formal declaration of institutional separation, and the so-called Great Schism actually was the culmination of centuries of gradual separation. From this split, the modern (Roman) Catholic and Eastern Orthodox churches arose.

Like Rome before it, though, Byzantium soon fell into a period of difficulties, caused to a large extent by the growth of the landed aristocracy, which undermined the theme system. Facing its old enemies, the Holy Roman Empire and the Abbasid caliphate, it might have recovered, but around the same time new invaders appeared on the scene who had little reason to respect its reputation. The Normans finally completed the Byzantine expulsion from Italy in 1071 due to an ostensible lack of Byzantine interest in sending any support to Italy, and the Seljuk Turks, who were mainly interested in defeating Egypt under the Fatimids, still made moves into Asia Minor, the main recruiting ground for the Byzantine armies. With the surprise defeat at Manzikert of emperor Romanus IV in 1071 by Alp Arslan, sultan of the Seljuk Turks, most of that province was lost.

End of empire

Emperor Manuel I Comnenus. The Knight-Emperor (r. 1143-1180AD)

A partial recovery was made possible after Manzikert by the rise to power of the Comnenian dynasty. The first emperor of this line, Alexius Comnenus, whose life and policies would be described by his daughter Anna Comnena in the Alexiad, began to reestablish the army on the basis of feudal grants (próniai) and made significant advances against the Seljuk Turks. His plea for western aid against the Seljuk advance brought about the First Crusade, which helped him reclaim Nicaea but soon distanced itself from imperial aid. Later crusades grew increasingly antagonistic. Although Alexius' grandson Manuel I Comnenus was a friend of the Crusaders, neither side could forget that the other had excommunicated them, and the Byzantines were very suspicious of the intentions of the Roman Catholic Crusaders who continually passed through their territory. Although the three competent Comnenan Emperors had the power to expel the severely outnumbered Seljuks, it was never in their interest to do so, as the expansion back into Anatolia would have meant sharing more power with the feudal lords, thus weaking their power. Ironically, re-conquering Anatolia may have saved the Empire in the long run.

Map of the Byzantine Empire around year 1180.

The Germans of the Holy Roman Empire and the Normans of Sicily and southern Italy continued to attack the empire in the 11t and 12th centuries. The Italian city states, who had been granted trading rights in Constantinople by Alexius, became the targets of anti-Western sentiments as the most visible example of Western "Franks" or "Latins." The Venetians were especially disliked, even though their ships were the basis of the Byzantine navy. To add to the empire's concerns, the Seljuks remained a threat, defeating Manuel at Myriokephalon in 1176.

Frederick Barbarossa attempted to conquer the empire during the Third Crusade, but it was the Fourth Crusade that had the most devastating effect on the empire. Although the stated intent of the crusade was to conquer Egypt, the Venetians took control of the expedition when their chieftains could not pay the transport of the troops, and under their influence the crusade captured Constantinople in 1204. As a result a short-lived feudal kingdom was founded (the Latin Empire), and Byzantine power was permanently weakened. At this time the Serbian Kingdom under the Nemanjic dynasty grew stronger with the collapse of Byzantium, forming a Serbian Empire in 1346.

The Latin Empire, the Empire of Nicaea, the Empire of Trebizond and the Despotate of Epirus

Three successor states were left — the Empire of Nicaea, the Empire of Trebizond, and the Despotate of Epirus. The first, controlled by the Palaeologan dynasty, managed to reclaim Constantinople in 1261 and defeat Epirus, reviving the empire but giving too much attention to Europe when the Asian provinces were the primary concern. For a while the empire survived simply because the Muslims were too divided to attack, but eventually the Ottomans overran all but a handful of port cities.

The Byzantine Empire in 1265 (William R. Shepherd, Historical Atlas, 1911)

The empire appealed to the west for help, but they would only consider sending aid in return for reuniting the churches. Church unity was considered, and occasionally accomplished by law, but the Orthodox citizens would not accept Roman Catholicism. Some western mercenaries arrived to help, but many preferred to let the empire die, and did nothing as the Ottomans picked apart the remaining territories.

The city of Constantinople in 1453

Constantinople was initially not considered worth the effort of conquest, but with the advent of cannons, the walls - which had been impenetrable except by the Fourth Crusade for over 1000 years - no longer offered adequate protection from the Ottomans. The Fall of Constantinople finally came after a two-month siege by Mehmed II on May 29, 1453. The last Byzantine emperor, Constantine XI Paleologus, was last seen entering deep into the fighting of a over-whelmingly outnumbered civilian army, against the invading Ottomans on the ramparts of Constantinople. Mehmed II also conquered Mistra in 1460 and Trebizond in 1461.

The Byzantine Empire around year 1400.

Mehmed and his successors, continued to consider themselves proper heirs to the Byzantines until their own demises early in the 20th century. By the end of the century, the Ottoman Empire had established its firm rule over Asia Minor and most of the Balkan peninsula.

Meanwhile, the role of the Emperor as patron of Eastern Orthodoxy was now claimed by the Grand Dukes of Muscovy starting with Ivan III. His grandson Ivan IV would become the first Tsar of Russia (tsar - also spelled czar - being derived from the Latin caesar) . Their successors supported the idea that Moscow was the proper heir to Rome and Constantinople, a Third Rome - an idea carried through the Russian Empire, until its own demise in the early 20th century.

Legacy and Importance

Emperor Constantine XI. The last Roman Emperor (r. 1449-1453AD)

It is said history is written by the winners, and no better example of this statement is of the treatment of the Byzantine Empire in history - an empire resented by Western Europe, as shown by the sacking of Constantinople by the Fourth Crusade. A popular American university text-book4 on medieval history that circulated in the 1960s and 70s, has this to say in the only paragraph in the book devoted to "Byzantium":

The history of Byzantium is a study in disappointment. The empire centering on Constantinople had begun with all the advantages obtained from the inheritance of the political, economic, and intellectual life of the 4th- century Roman empire ... Byzantium added scarcely anything to this superb foundation. The Eastern Roman empire of the Middle Ages made no important contributions to philosophy, theology, science or literature. Its political institutions remained fundamentally unchanged from those which existed ... at the end of the 4th century; while the Byzantines continued to enjoy an active urban and commercial life they made no substantial advance in the technology of industry and trade as developed by the cities of the ancient world. Modern historians of the medieval Eastern Roman empire have strongly criticized the tendency of 19th-century scholars to write off Byzantium as the example of an atrophied civilization. Yet it is hard to find ... any contribution by way of either original ideas or institutions which the medieval Greek-speaking peoples made to civilization. (pp. 248-9)

The 20th century has seen an increased interest by historians to understand the empire, and its impact on European civilization is only recently being recognised. Why should the West be able to perceive its continuity from Antiquity and thus its intrinsic meaning in the modern world - in so lurid a manner, only to deny this to the "Byzantines"?5 Called with justification "The City," the rich and turbulent metropolis of Constantinople was to the early Middle Ages what Athens and Rome had been to classical times. Byzantine civilization itself constitutes a major world culture. Because of its unique position as the medieval continuation of the Roman State, it has tended to be dismissed by classicists and ignored by Western medievalists. And yet, the development and late history of Western European, Slavic and Islamic cultures are not comprehensible without taking it into consideration. A study of medieval history requires a thorough understanding of the Byzantine world. In fact, the Middle Ages are often traditionally defined as beginning with the fall of Rome in 476 (and hence the Ancient Period), and ending with the fall of Constantinople in 1453.

Byzantium was arguably the only stable state in Europe during the Middle Ages. Its expert military and diplomatic power ensured inadvertently that Western Europe remained safe from many of the more devastating invasions from eastern peoples, at a time when the Western Christian kingdoms might have had difficult containing it. Constantly under attack during its entire existence, the Byzantines shielded Western Europe from the Persians, Arabs, Seljuk Turks, and for a time, the Ottomans.

In commerce, Byzantium was one of the most important western terminals of the Silk Road. It was also the single most important commercial center of Europe for much, if not all, of the Medieval era. The fall of Constantinople to the Ottoman Turks in 1453 closed the land route from Europe to Asia and marked the downfall of the Silk Road. This prompted a change in the commercial dynamic, and the expansion of the Islamic Ottoman Empire not only motivated European powers to seek new trade routes, but created the sense that Christendom was under siege and fostered an eschatological mood that influenced how Columbus and others interpreted the discovery of the New World.6

Byzantium played an important role in the transmission of classical knowledge to the Islamic world and to Renaissance Italy. Its rich historiographical tradition preserved ancient knowledge upon which splendid art, architecture, literature and technological achievements were built. It is not an altogether unfounded assumption that the Renaissance could not have flourished were it not for the groundwork laid in Byzantium, and the flock of Greek scholars to the West after the fall of the Empire. The influence of its theologians on medieval Western thought (especially on Thomas Aquinas) was profound, and their removal from the "canon" of Western thought in subsequent centuries has, in the minds of many, only served to impoverish the canon.

The Byzantine Empire was the empire that brought widespread adoption of Christianity to Europe - arguably one of the central aspects of a modern Europe’s identity. This is embodied in the Byzantine version of Christianity, which spread Orthodoxy (the so-called "Byzantine commonwealth," a term coined by 20th century historians) throughtout Eastern Europe. Early Byzantine missionary work spread Orthodox Christianity to various Slavic peoples, and it is still predominant among the Russians, Ukrainians, Serbians, Bulgarians, people of the Republic of Macedonia, as well as among the Greeks. Less well known is the influence of the Byzantine religious sensibility on the millions of Christians in Ethiopia, the Coptic Christians of Egypt, and the Christians of Georgia and Armenia.

Robert Byron, one of the first great 20th century Philhellenes, maintained that the greatness of Byzantium lay in what he described as "the Triple Fusion": that of a Roman body, a Greek mind and an oriental, mystical soul. The Roman Empire of the East was founded on Monday 11 May 330; it came to an end on Tuesday 29 May 1453 - although it had already come into being when Diocletian split the Roman Empire in 286, and it was still alive when Trebizond finally fell in 1461. It was an empire that dominated the world in all spheres of life, for most of its 1,123 years and 18 days. Yet although it has been shunned and almost forgotten in the history of the world up until now, the spirit of Byzantium still resonates in the world. By preserving the ancient world, and forging the medieval, the Byzantine Empire's influence is hard to truly grasp. However, to deny history the chance to acknowledge its existence, is to deny the origins of Western civilization as we know it.

See also



  • Georg Ostrogorsky. "History of the Byzantine State", 2nd edition, New Brunswick (NJ) 1969.
  • Warren Treadgold. "A History of the Byzantine State and Society", Stanford, 1997.
  • Helene Ahrweiler, "Studies on the Internal Diaspora of the Byzantine Empire", Harvard University Press, 1998.
  • John Julius Norwich , Byzantium (I): The Early Centuries , Publisher: Knopf; 1989, ISBN: 0394537785
  • John Julius Norwich , Byzantium (II) : The Apogee , Publisher: Knopf; 1992, ISBN: 0394537793
  • John Julius Norwich , Byzantium (III): The Decline and Fall , Publisher: Knopf; 1995, ISBN: 0679416501


  • Helene Ahrweiler, Les Europeens, pp.150, Herman (Paris), 2000.
  • Steven Runciman, The Emperor Romanus Lecapenus and his Reign, p.9. University Press (Cambridge), 1990.
  • Edward Gibbon, Decline and Fall of the Roman Empire, chapter 53.
  • Norman Cantor, Medieval History, the Life and Death of a Civilization, 1963
  • J.M. Hussey, The Cambridge Medieval History, Volume IV -- The Byzantine Empire Part I, Byzantium and its Neighbors, Cambridge University Press 1966
  • http://www.greece.org/Romiosini/talk1.html
  • http://www.bedfordstmartins.com/oconnor/oconnor/content/columbus.html

Byzantine Empire, Books

John Julius Norwich, A Short History of Byzantium ,Vintage; Reprint edition 1998, ISBN: 0679772693
Jonathan Phillips, The Fourth Crusade and the Sack of Constantinople, Pimlico, 2005. ISBN 1844130800
John Haldon , Byzantium a History, 2004, ISBN: 0752423436

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