The type of government that is headed by a king or queen is called

The type of government that is headed by a king or queen is called a monarchical government. In a monarchical government, the monarch is the head of state and has significant power and influence over the country's governance. The monarch may have different titles, such as king or queen, emperor or empress, depending on the country's traditions and history. In a monarchical government, the monarch may have varying degrees of power, depending on the country's political system. In some countries, the monarch is a ceremonial figurehead with no real political power, while in others, the monarch has significant authority over government decisions. Monarchies can be hereditary, where the monarch's position is passed down through the family, or elective, where the monarch is chosen by a group of people, such as a council of nobles or a parliament. Overall, a monarchical government is characterized by the concentration of power in the hands of a single individual, the monarch, who holds significant influence over the country's governance and decision-making processes.