During the 11th and 12th centuries the Byzantine Empire was a country of religious, social and cultural diversity. We now call Byzantium a mere extension of the ancient Roman Empire. From the Augustus era, the Byzantine empire or eastern half was a richer and more culturally rich part of the empire. Constantine of Roman Emperor Constantine was established in 330 AD and was named after Constantinople, but in the next 1000 years Constantinople will become the center of the Greek Empire and become the property of the Empire. Power is comparable.
- Withdrawal and the Comune dynasty (AD 1057 to AD 1204): The ruin of the Macedonian dynasty, the conspiracy of the court. Burgers rebelled and formed a new competitive empire. The Normans occupied Byzantium in southern Italy and invaded Greece. In 1071, the Turks broke through Asia Minor and beat Byzantine in the battle of Mangic. Aleksios I found the Komnenian dynasty and led recovery. The crusaders helped start by Byzantine, but immediately opposed them. Tension between Byzantine and Latin businessmen. In 1182, Latin American was massacred in Constantinople. The Crusaders occupied Constantinople in 1204
After Manzikert, the Komnenian dynasty achieved a partial recovery (known as Komnenian restoration). The first Comune Emperor was Isaac I (1057-1059), after which the Doka Dynasty won power (1059-81). In 1081, Komnenoi again won power under the rule of Alexios I. From the beginning of his reign, Alex was attacked by Normans under Robert Guycard and his son Bohemund of Taranto, he captured Dirhakium and Corfu and surrounded Larsessa of Thessaly. Robert Giscard died in 1085, temporarily relaxing the Norman problem. The following year, Seljuk Sultan died and Sultanate broke up for internal confrontation. Through his own efforts, Alexius beat Pechenegs; on April 28, 1091 they were extinct with surprises at the fight of Levounion.
In 1081, when the attacks of Normans and Turks reached their height, the new emperor Alexis I was on the throne. His dynasty, the Comune Morning Dynasty will oversee the recovery of the Empire after these disasters. However, for the first time, the Byzantines had to seek help from the west to seek help from their distant Christians from Western Europe. Western Europe has a history of religious differences with Byzantines, but they are now aware that the Byzantine Empire is everything that hinders Muslims from entering Europe.