Before it was called Halloween, this holiday, which found its origin in Paganism, was known as Samhain. Samhain was a festival celebrated by the Celts around 2000 years ago on the night of October 31st as it is today. At that time, this night was believed to be the time when the veil between the world of the living and the world of the spirit would be so thin that spirits could go through it, the veil being so thin meant it was the perfect time for the druids to make predictions about the upcoming season. From this belief came the tradition of putting on costumes, as they believed it would…