The reason why hangings were carried out at monthly intervals was that the accused were first jailed and then later hanged for entertainment and served as a warning for others.
This is an event relating to the Salem witch killings that occurred in 1692 in Salem, Massachusetts.
The Salem Witch Trials were conducted in Salem when some people accused others of witchcraft, and the accused were put in jail and later killed by hanging in a month.
Hence, in this case, it is concluded that the accused were jailed first before hanging them for entertainment and warning purposes.
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