the origin of trick-or-treating may have also come from celtic tradition. poor children in britain and ireland went door-to-door
on all hallows Eve and received food in exchange for the promise of praying for the giver's dead relatives on all saints day.
this practice was know as going-a-souling while that may be the start of it , that tradition did not make its way to america.
here, trick-or-treating may have started with children trading songs for treating the1910s, according to old newspaper texts.
the tradition did not really take off until after Word war ll, when popular children's magazines started discussing it and the idea entered popular culture, including adio shows and cartoon