Who uses monarchy?

Monarchy is used in various countries around the world as a form of government, where a single ruler, often a king or queen, holds significant authority. Examples include the United Kingdom, Saudi Arabia, and Japan, each with different levels of political power and influence. Monarchies can be absolute, where the monarch has unchecked power, or constitutional, where their authority is limited by a constitution or legislative body. These systems often embody cultural heritage and national identity.