A constitutional monarchy is a form of government where a monarch, such as a king or queen, acts as the head of state within the boundaries set by a constitution. This constitution outlines the powers of the monarchy and the rights of the citizens, ensuring that the monarch's authority is limited and regulated by law. In this system, the monarch often has ceremonial duties, while elected officials, such as a prime minister and parliament, handle the day-to-day governance. Countries like United Kingdom, Sweden, and Japan exemplify constitutional monarchies, where the royal family plays a symbolic role in national identity and culture.