Halloween is a holiday celebrated each
year on October 31, the tradition
originated with the ancient
Celtic festival of Samhain, when people
would light bonfires and wear costumes to ward off ghosts. In the eighth
century, Pope Gregory III designated
November 1 as a time to honor all saints.
Soon, All Saints Day incorporated some of
the traditions of Samhain. The evening
before was known as All Hallows Eve, and
later Halloween. Over time,
Halloween evolved into a day of
activities like trick-or-treating, carving jack-o-lanterns, festive
gatherings, donning costumes and eating treats.