"To take vengeance on people" here is an idiom meaning to hurt people who have hurt you. AT: "to fight back against their enemies" (See: [[rc://en/ta/man/translate/figs-idiom]])
This is the city where the king's palace was. See how you translated it in [Esther 1:2](../01/01.md). (See: [[rc://en/ta/man/translate/translate-names]])