That person is called a king
Germany is one if you consider the split of west and east germany
The Consitution is used to bring law and order to the US. It is the basis of our government, our foundation. It is what helps the US abide by the laws created by our founders, and not go against the citizen's natural freedoms. It is important to the US because it gives the people our rights, freedoms, order, and law. We need the Constitution to run the country fairly and give all people equal representation. The government is a balance of law and organic freedoms to citizens.
I hope this helps!
~cupcake
