+Chalcedon was an ancient city in Bithynia, Asia Minor, now part of modern Istanbul. It is primarily remembered as the site of the [Council of Chalcedon](/wiki/Council_of_Chalcedon) in 451 CE, a pivotal event that shaped [Christology](/wiki/Christology) by defining the two natures of Christ. This critical council solidified doctrinal understanding for much of the Christian world.
+## See also
+- [Christianity](/wiki/Christianity)
+- [Ecumenical Council](/wiki/Ecumenical_Council)
+- [Byzantine Empire](/wiki/Byzantine_Empire)
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