Halloween

Celebrated in the United States, Canada, and the British Isles annually on October 31, by children going door-to-door while wearing costumes, asking for treats, and/or playing pranks. This practice is known by the traditional greeting by the children, "Trick or Treat."

Halloween occurs on the evening preceding the Christian feast of Hallowmas, Allhallows, or All Saints' Day. The origin of Halloween is thought to have started with the Druids who believed that evil spirits wandered the earth on that particular evening and would light fires to ward off these spirits.

The Celts had similar beliefs of the Druids, and after the Romans had conquered Britain, Halloween and the Roman harvest festival of November 1 were combined. The harvest festival was in honor of Pomona, the goddess of the fruit trees, and the modern practices of "bobbing for apples" and carving "jack o'lanterns" may have originated this way.