When one person rules several kingdoms, it is referred to as a "monarchy" or "multikingship," depending on the context. In historical terms, this can also be described as a "personal union," where different territories are governed by a single monarch while maintaining their distinct laws and customs. This arrangement was common in medieval Europe and other regions, allowing for centralized control without full political unification.
monarch
A time a person rules is called a 'Ruling Period' or 'Reign'
Kingdom.
Someone who rules over a kingdom is called a queen or king.A monarch will rule over a kingdom. A monarch is a king or queen.
She rules and lives in a kingdom called- Sarasaland
They are called emperors, they have dominion over vast territories.
Several rules in the bankruptcy court
Several rules in the bankruptcy court
A dictator.
The person who rules on behalf of an underage king is called a regent. A regent is appointed to exercise the authority and responsibilities of the monarchy until the king reaches the age of majority or is otherwise able to take on the role. This position may be filled by a relative, a trusted advisor, or another official, depending on the laws and customs of the kingdom.
He rules an area with several churches called a diocese
The most important is of course the king for he watches all the kingdom and rules it wisely.