+**1 BC** marks the final year before the [Christian Era](/wiki/Christian_Era) began, directly preceding [AD 1](/wiki/AD_1) in the counting of years. It represents a boundary, transitioning from the ancient past into the common calendar system widely used today.
+## See also
+- [BC](/wiki/BC)
+- [AD](/wiki/AD)
+- [Julian Calendar](/wiki/Julian_Calendar)
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