It seems Irish and Scottish immigrants, who arrived between 1840 and 1870, were responsible for bringing their traditions, including Halloween to the United States. The origins of modern-day Halloween came from a pre-existing autumn festival of the dead, called Samhain.
Scottish and Irish-Americans held dinners and balls, celebrating their heritage and legends. Children’s Halloween activities included bobbing for apples and divination games. Pranks and mischief were also common.
So, like Christmas traditions, many of our modern-day Halloween celebrations originated during the Victorian era.