Final answer:
Marshal Herrick chained John Proctor to a wall because Proctor was accused of witchcraft during the Salem witch trials in 1692.
Step-by-step explanation:
Marshal Herrick chained John Proctor to a wall because Proctor had been accused of witchcraft during the Salem witch trials in 1692. Herrick was a constable in Salem and one of his duties was to ensure that accused witches remained in custody until they went to trial. Chaining Proctor to a wall was a way to prevent him from escaping or causing harm to himself or others.
Learn more about The Salem witch trials