The Byzantine Empire (or Eastern Roman Empire) was the name of the eastern remnant of the Roman Empire which survived into the Middle Ages. Its capital was Constantinople, which today is called Istanbul. Unlike the Western Roman Empire, the most important language was Greek, not Latin, and Greek culture and identity dominated.

Name 
The Byzantine Empire was known to its inhabitants as:
the "Roman Empire" or the "Empire of the Romans" (Latin: Imperium Romanum, Imperium Romanorum; Greek:  Basileia tōn Rhōmaiōn,  Archē tōn Rhōmaiōn), 
"Romania" (Latin: Romania; Greek:  Rhōmania), 
the "Roman Republic" (Latin: Res Publica Romana; Greek: , Politeia tōn Rhōmaiōn),
"Graecia" (Greek:  meaning "land of the Greeks"),
"Rhōmais" (Greek: ).

Start of the Empire (330–476 AD) 
In 324, the Roman emperor Constantine I moved the capital of the Roman Empire to the Greek city of Byzantium, and he renamed the city Constantinople. 150 years later, after the city of Rome was slowly taken over by Germanic people during the Migration period, Constantinople was the only remaining capital of the empire. This Eastern empire had a smaller territory than the original Roman Empire.

Problems in the Empire (476–717 AD)

Wars in the West 
The Byzantine Empire tried to take back Rome and Italy from the Germans. Between 530–555 AD, the Byzantines won many battles and took back Rome.

These gains did not last however. More Germans came and eventually Italy and Rome was lost again. Worse was to come when Avar and Slavic peoples came to take Southeast Europe from the Byzantines. After the 560s, the invaders gradually conquered the Balkans except for parts of modern Greece and Albania. These invaders were later followed by the Bulgarians. The Avars and Bulgarians were both Turkic peoples at first. They ruled over Slavic people called "Sklavinai" and slowly absorbed Slavic language and customs.

Wars in the East 
After western Rome was captured by Germanic people, the Empire continued to control modern Egypt, Greece, Palestine, Syria and Turkey. However, another empire, known as the Persian or Sassanid Empire, tried to take these lands for itself. Between 224 and 628, the Greco-Romans and the Persians fought many battles with many men killed in the fighting. Eventually, the Persians were defeated in 627 in modern-day Iraq, near the ancient city of Nineveh, allowing the Byzantines to keep their lands.

After this, another enemy appeared: the Arabs. The Byzantines were economically damaged by the battles with the Persians. They could not withstand the Arabs. Palestine, Syria and Egypt were lost between 635 and 645. However, the Byzantines defended Asia Minor (modern Turkey) and the Arab advance stopped.

Recovery of the Empire (717–1025 AD) 
In 718, the Arabs were defeated outside Constantinople, ending the Arab threat in the east, but leaving the Byzantine Empire severely weakened. In the west, the Byzantines launched a number of attacks against the Bulgarians. Some of these were successful, others were not and led to the deaths of many emperors. Over time, the Byzantine Empire would become weaker as it lost land to outside invaders.

Recovery in the west 
Between 1007–1014, the ambitious Byzantine emperor Basil II attacked Bulgaria many times and eventually won a great victory. Later, he fully recaptured Greece, adding it back to the Byzantine Empire. He then went on to conquer Bulgaria, which was completed in 1018.

Recovery in the east 
In the east, the Arabs once again became a threat to the empire. However, Basil II's attacks won many more victories. Much of Syria was restored to the empire and Turkey and Armenia were secured. After 1025, the Arabs were no longer a threat to the Byzantine Empire.

Decline of the Empire (1025–1453 AD)

Start of Decline (1025–1071) 
After the Byzantine Emperor Basil II died, many unskilled Emperors came to the throne. They wasted the money of the Empire and reduced its army. This meant that it could not defend itself well against enemies if they would attack. Later, the Byzantines relied on mercenaries, soldiers who fought for money and not for their country, so they were less loyal and reliable and more expensive. Because they had mercenaries, military generals were able to rise to power and grab it from the elaborate bureaucracy, a system of administration where tasks are divided by departments.

Rise of the Turks (1071–1091) 
A large number of people known as the Turks rode on horseback from central Asia and attacked the Byzantine Empire. The Seljuk Empire took most of Anatolia from the Byzantines by 1091. However, the Byzantines received help from people in Europe. This help is known as the First Crusade. Many knights and soldiers left to help the Byzantines but also to secure Jerusalem for Christians, which at the time was in Muslim hands.

The Byzantines survive (1091–1185) 
The Byzantine Empire survived and with the help of the Europeans took back half of Turkey from the Turks, with the other half remaining under the Turks. The Byzantines survived because three good Emperors ruled one after the other, allowing the Byzantines to grow strong again.

The Byzantines become weak again (1185-1261) 
After the three good Emperors, the remaining Emperors ruled badly and again wasted a lot of money and soldiers.

In the west, the Europeans betrayed the Byzantines and attacked their capital, Constantinople. The Byzantines lost their capital in 1204 and they did not take it back until 1261. The Byzantines were then divided into many smaller Greek states that were fighting with each other for the throne of the empire.

The Turks take the Byzantines (1261–1453) 
After the Byzantines took back Constantinople, they were too busy fighting the Europeans who had betrayed them and could not find enough soldiers or money to fight the new Ottoman Empire of the Turks. All of Anatolia was lost by 1331. In 1369, the Turks crossed over from Turkey and into Greece, taking over much of Greece between 1354 and 1450. 

The Byzantines lost so much land, money and soldiers that they became very weak and begged for help from the Europeans. Some soldiers and ships came from Italy and the Pope to assist the Byzantines when the Turks attacked Constantinople in April 1453. They were very outnumbered though and the walls of Constantinople were badly damaged by cannons used by the Turks. At the end of May 1453, the Turks captured Constantinople by entering through one of the gates along the walls and the empire came to an end. The city was plundered for three days. At the end, the population which had not been able to escape, was deported to Edirne, Bursa and other Ottoman cities, leaving the city deserted except for the Jews of Balat and the Genoese of Pera. After that, Constantinople became Istanbul, the capital of the Ottoman Empire, which it would be until the 1900s, when the capital was moved to Ankara, a city in the Asian part of Turkey.

Legacy 
The Byzantine Empire had many achievements:
 They protected Europe from eastern invasions.
 They preserved Greek language and Hellenistic culture.
 They preserved many Roman political traditions that had been lost by Western Europe.
 They kept a lot of knowledge for us to read about today.
 They produced much fine art with a distinctive style.
 They were the protectors and sponsors of the Eastern Church, which later becomes the Orthodox Church.
 They used good architecture that is still used.
 Their cities had plumbing which is still in use.
 A lot of beautiful churches and mosques in Turkey and Greece today are either made from Byzantine buildings or inspired by them.
 They made several inventions, such as the flamethrower and "Greek fire", a kind of napalm.
 They made advances in many studies, like political studies, diplomacy and military sciences.

Notes

See also 

 Byzantine art
 Byzantine Greeks

References

Citations

Sources

Other websites 
 World History Encyclopedia: Byzantine Empire
 Roman Emperors (De Imperatoribus Romanis)
 18 Centuries of Roman Empire: A Cartography by Howard Wiseman 
 12 Byzantine Rulers: The History of the Byzantine Empire (Lars Brownworth)
 18 centuries of Roman Empire by Howard Wiseman (Maps of the Roman/Byzantine Empire throughout its lifetime).
 Byzantine & Christian Museum
 Dumbarton Oaks: Byzantine Studies
 Byzantium: Byzantine Studies on the Internet
 Translations from Byzantine Sources: The Imperial Centuries, c. 700–1204
 De Re Militari: The Society for Medieval Military History
 Medieval Sourcebook: Byzantium
 Bibliography on Byzantine Material Culture and Daily Life (University of Vienna)
 Constantinople Home Page
 Byzantium in Crimea: Political History, Art and Culture.
 Byzanzforschung: Institute for Byzantine Studies of the Austrian Academy of Sciences

Places of Ancient Rome
 
Former countries in Europe
Former countries in the Middle East
Former countries in Africa
Roman Empire
285 establishments
1453 disestablishments
Establishments in Africa
3rd-century establishments in Asia
Establishments in Europe
Disestablishments in Europe
Disestablishments in Asia
Disestablishments in Africa