+The year 1203 saw the [Fourth Crusade](/wiki/Fourth_Crusade) besiege [Constantinople](/wiki/Constantinople), marking a significant turning point in its long history. The ancient city's fall led to a dramatic, though temporary, shift in imperial power.
+## See also
+- [Crusades](/wiki/Crusades)
+- [Byzantine Empire](/wiki/Byzantine_Empire)
+- [Middle Ages](/wiki/Middle_Ages)
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