ghosts walked and mingled with the living, or so the Celts thought. The townspeople baked food all that day and when night fell they dressed up and tried to resemble the souls of the dead. Hoping that the ghosts would leave peacefully before midnight of the new year.Much later, when Christianity spread throughout Ireland and October 31 was no longer the last day of the year, Halloween became a celebration mostly for children. Ghosts went from door to door asking for treats, or else a trick would be played on the owners of the house. When millions of Irish people immigrated to the United States in the 1840s the tradition came with them.Today' school dances and neighborhood parties called block parties are popular among young and old alike. More and more adults celebrate Halloween. They dress up like historical or political figures and go to masquerade parties（化妆舞会）。 In larger cities, costumed children and their parents gather at shopping malls early in the evening. Stores and businesse