It remained the capital of the eastern part of the empire when the empire was divided into two halves in 395 A.D., and whereas the western half fell to [[Barbarian]] invasions in the space of less than a century, the eastern half survived through the entire [[Medieval]] period. Initially the centre of Eastern Orthodox Christianity, it was sacked by the Western Christian forces of the Fourth Crusade in 1204 and wasn't regained by the Byzantines, under Emperor Michael VIII Palaeologous, until 1261. After this it grow weaker and smaller. | It remained the capital of the eastern part of the empire when the empire was divided into two halves in 395 A.D., and whereas the western half fell to [[Barbarian]] invasions in the space of less than a century, the eastern half survived through the entire [[Medieval]] period. Initially the centre of Eastern Orthodox Christianity, it was sacked by the Western Christian forces of the Fourth Crusade in 1204 and wasn't regained by the Byzantines, under Emperor Michael VIII Palaeologous, until 1261. After this it grow weaker and smaller. |