+The Eastern Orthodox Church is the second-largest Christian communion, tracing its origins to the earliest Christian communities of the [Byzantine Empire](/wiki/byzantine_empire). It comprises a fellowship of autocephalous churches, united by shared [doctrine](/wiki/doctrine) and ancient liturgical traditions, primarily in Eastern Europe and the Middle East.
+## See also
+- [Christianity](/wiki/christianity)
+- [Orthodoxy](/wiki/orthodoxy)
+- [Church History](/wiki/church_history)
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