It changed it by changing it.
orthodox Christianity
Christianity
Islam became a rival of Christianity in the Byzantine Empire.
Orthodox Christianity.
It was Orthodox Christianity.
orthodox Christianity
Christianity
Christianity
Islam became a rival of Christianity in the Byzantine Empire.
Orthodox Christianity.
It was Orthodox Christianity.
The main impact which the Byzantine Empire has had on the modern societies of many eastern European countries is the spread of Orthodox Christianity by Byzantine missionaries.
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.
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Orthodox Christianity