Halloween is initially a Celtic celebration of Irish origin: the Celtic New Year! About 3000 years ago, the Celtic calendar did not end on December 31, but on October 31. And this last night of the year was the night of the god of death (Samain or Samhain).
In October, the nights get longer and legend has it that the ghosts took the opportunity to visit the living. So to prevent ghosts from coming to haunt them, the Celts had some rituals including dressing in terrifying costumes to scare ghosts and meeting to party on the evening of October 31. It was the Irish immigrants who brought the Halloween tradition to America with the
