Some traditional Halloween customs associated with Halloween include going trick-or-treating in spooky costumes, pumpkin carving, and going door to door for candy. Samhain is a Gaelic term that is pronounced: “SAH-win.” It was a pagan religious celebration to welcome the harvest at the end of summer when people would light bonfires and wear costumes to ward off ghosts.
The custom dates back to the ancient Celtic festival known as Samhain, during which time people lit bonfires and dressed up in costumes in an effort to fend off spirits. Pope Gregory III, who reigned in the seventh century, established November 1 as the day on which all saints are honored. Over time, several of the customs associated with Samhain made their way into the celebration of All Saints Day.