The two emperors who notably allowed and supported Christianity in the Byzantine Empire were Constantine the Great and Theodosius I. Constantine, who reigned from 306 to 337 AD, issued the Edict of Milan in 313 AD, granting religious tolerance to Christians and allowing them to practice their faith openly. Theodosius I, ruling from 379 to 395 AD, took a significant step further by declaring Christianity the official state religion of the Roman Empire and banning pagan practices.
orthodox Christianity
No. It was the only empire to adopt the Orthodox version of Christianity, but the Roman Empire did practice Roman Catholicism at a time. Many other later European Empires also allowed Christianity, heading the crusades and converting parts of present-day Russia. Some examples of such empires would be the British Empire, the German Empire, the Spanish Empire, and the French Empire.
Christianity
Islam became a rival of Christianity in the Byzantine Empire.
Orthodox Christianity.
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Constantinople was the capital of the Byzantine Empire, which had a long line of emperors from its founding in 330 AD until the fall of the city in 1453. There were a total of 88 Byzantine emperors, including co-emperors. The city was also the capital of the Eastern Roman Empire, which is often considered synonymous with the Byzantine Empire.
Diocletian
orthodox Christianity
No. It was the only empire to adopt the Orthodox version of Christianity, but the Roman Empire did practice Roman Catholicism at a time. Many other later European Empires also allowed Christianity, heading the crusades and converting parts of present-day Russia. Some examples of such empires would be the British Empire, the German Empire, the Spanish Empire, and the French Empire.
Christianity
Christianity
Islam became a rival of Christianity in the Byzantine Empire.
Orthodox Christianity.
It was Orthodox Christianity.
Islam became the strongest rival of Christianity in the Byzantine Empire.
The form of Christianity based on Greek heritage practiced in the Byzantine Empire is Eastern Orthodox.