A long held tradition in America and the UK, Halloween is celebrated each year on October 31, this year it is on Wednesday, October 31. It originated with the ancient Celtic festival of Samhain, when people would light bonfires and wear costumes to ward off ghosts and witches. 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 sweet…