+**921** primarily refers to a powerful [earthquake](/wiki/Earthquake) that struck [Taiwan](/wiki/Taiwan) on September 21, 1999. This seismic event brought widespread devastation and profound change, leaving a lasting mark on the island's history and infrastructure.
+## See also
+- [Seismology](/wiki/Seismology)
+- [Fault Line](/wiki/Fault_Line)
+- [Natural Disaster](/wiki/Natural_Disaster)
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