usually a dictator
Empire
Scotland and England.
There was no one ruler. It was a 1000 years long, so many people ruled many countries at different times.
a ruler is called "Fürst"
A king is one kind of ruler but a ruler can be other types also. They can be a queen, a prince, a baron or regent; and some are called a premier, a chairman, or some have been called 'president for life'.
A group of people or territory ruled by one ruler is called an empire
A metric ruler is 30 cm in length. This type of ruler is commonly called a metric foot ruler because it is similar in length to a one foot ruler.
It is called an autocracy.
Called a straight edge
Arabs have no united ruler, they have various political leaders in different countries.
A ruler who has total power is called an autocrat. Examples of autocrats include dictators, presidents in a one-party system, and absolute monarchs.