The state religion of the Byzantine Empire, during the entire time we refer to it by that name, was Christianity.
The Crete
>Constantinople fell with rome in 414 to the Byzantine Empire. >>Constantinople fell on May 29, 1453 to Sultan Mehmet the Conqueror. This is when the Byzantine Empire also fell, and the Hagia Sophia became a mosque.
By the late 3rd century AD Christianity had become the major religion of the Roman Empire. Prior to this, the Roman religion was the most important one because it was the state religion. However, peoples in the provinces retained their old religions they had worshiped since before the Roman conquests.
The Byzantine Empire viewed religion as an integral part of the state, with the Emperor as the head of both the political and religious affairs. In contrast, the Roman Empire tolerated a wide range of religious beliefs and practices, and while the Emperor held religious authority, it was not as closely intertwined with the state. Additionally, the Byzantine Empire placed a strong emphasis on Byzantine Christianity, specifically the Eastern Orthodox Church, while the Roman Empire encompassed a wider variety of religious beliefs, including Christianity, Paganism, and Judaism.
The Patriarch of the Greek Orthodox Church was also the Byzantine Emperor, head of both Church and State.
The Byzantine Empire.
Byzantine Empire is a term which has been coined by historians to indicate the eastern part of the Roman Empire after the fall of the western part. The people in question did not even know this term and called their empire Roman Empire. Christianity spread though the eastern part of the Roman Empire before the fall of the western part. Christianity developed into two main forms, the Latin or Western Church and the Greek or Eastern church. The former was the main form of Christianity in the western part of the empire and the latter was the main one in the eastern part. Later they came to be called Catholic and orthodox respectively. Both these branches of Christianity became state religion in 380. Therefore,what we now call Orthodox Christianity was already the religion of the eastern part of the Roman empire before the Byzantine period.
Byzantine is anything pertaining to the Byzantium Empire or its period of existence. Islamic are those things relative to the religion of Islam.
After the Byzantine-Sassanid War of 602-28 Syria became again a province of the Byzantine Empire. During the Muslim conquests of 634-718 Syria is conquered and became a caliphate (Islamic state) in the Middle East.
Through most of their history the ancient Romans had their own religion: Roman Religion. In the Later Empire Christianity spread in the Roman Empire, was endorsed by the Roman emperors and became state religion.
Islam
Christianity is the contribution of the Romans to religion. Christianity spread around the Roman Empire and eventually became state religion. Both Catholic and Orthodox Christianity originally developed in the Roman Empire.
When Constantine converted Christian, then Christianity became a state religion for the Roman Empire.
By Roman art we usually mean art from the Roman empire. When Emperor Constantine introduced Christianity as state religion, the center of the empire moved to Constantinople. After this we talk about Byzantine art which is mainly religious.
When Constantine converted Christian, then Christianity became a state religion for the Roman Empire.
The Crete
No, from the rule of the emperor Constantine, all Romans were Christians (Christianity became the state religion of the Roman Empire).