Answer:
The practice can be traced to the ancient Celts, early Roman Catholics and 17th-century British politics. Trick-or-treating—setting off on Halloween night in costume and ringing doorbells to demand treats—has been a tradition in the United States and other countries for more than a century.
Step-by-step explanation:
It originated from a ritual that involved people dressing up as ghosts,demons and monsters. They would dance around a bonfire. They also received treats.
It was basically a pagan ritual.
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