Completar frases Hallween fill in gapsVersión en línea Hallween fill in gaps description por Nazim Turdiyev 1 predictions cold summer dependent death important addition ancient beginning Samhain ago celebrated boundary blurred believed Halloween's origins date back to the Celtic festival of ( pronounced sow - in ) . The Celts , who lived 2 , 000 years in the area that is now Ireland , the United Kingdom and northern France , their new year on November 1 . This day marked the end of and the harvest and the of the dark , winter , a time of year that was often associated with human . Celts that on the night before the new year , the between the worlds of the living and the dead became . On the night of October 31 they celebrated Samhain , when it was believed that the ghosts of the dead returned to earth . In to causing trouble and damaging crops , Celts thought that the presence of the otherworldly spirits made it easier for the Druids , or Celtic priests , to make about the future . For a people entirely on the volatile natural world , these prophecies were an source of comfort and direction during the long , dark winter .