The Cyrillic alphabet, developed by Cyril and Methodius, was the biggest influence of Byzantine/Greek culture on Russia.
The biggest influence of Byzantine/Greek culture on Russia was the alphabet. In the ninth century, missionaries Cyril and Methodius devised the Cyrillic alphabet to write the Bible and liturgy in the Slavic language. This adoption of the Cyrillic alphabet helped solidify the influence of Byzantine/Greek culture on Russia.
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