The Grimaldi family has ruled Monaco for 700 years.
The Grimaldis have ruled Monaco for over 600 years,and still do.
Because Monaco is a principality (a state ruled by princes).
Monaco is a Principality, as it is ruled by a Prince. It is also officially a country.
Monaco
-monaco has a population of 32,700 -been ruled by the grimaldi family since 13th century -is the second largest country in the world
Prince Ranier III.
Queen Victoria ruled the British Empire, as far as Grace goes do you mean Princess Grace of Monaco, she was never a queen, Monaco is aPrincipality, her husband was Prince Rainier .
Depending upon the nation, a Monarchy can be a Kingdom or Principality. The country of Monaco is ruled by a Prince, but Monaco still has a government along side it's Royal family. Other nations will have an Empire, which there will be ruled by an Emperor or an Empress.
Monaco is a constitutional monarchy headed by Prince Albert II.
She never ruled Monaco. While she was married to the Crown Prince that is different that ruling in her own right. She was married to him from the mid 1950's to 1981.
MonacoAnother AnswerPrince Albert II is a citizen of Monaco, with parentage that includes Princess Grace and Prince Rainier. His family, the Grimaldi family, has ruled Monaco since 1297.He is not Italian, nor is he French, even though both of those countries are within walking distance from his palace.You can read more about Monaco, below.
He has been a Prince since his birth in 1958 and has ruled Monaco since April 2005.