The word monarchy meaning - its a form of government with a monarch at the head.
The meaning for the word congressman - it is a person who has been appointed or elected for congress .
The meaning for the word governor- it's an official appointed to govern a town or region.
The meaning for the word democracy - here the people vote for selecting their leader who rules them.
The meaning for the word diplomacy- its the art of dealing with people in a sensitive and tactful way.
The meaning for the word reigning- refers to possess or exercise sovereign power.
Therefore monarchy, governor, democracy, reigning is the solution.