Nations have a symbiotic dependency on their inhabitants conduct. As they gather and live closer together, disputes arise. They require a decision, and then a rule is accepted, and their conduct is ordered.
Human nature allows paying one to remember the rules and telling others of allowed conduct. All people are sovereign individuals. A group pledges their sovereignty to a ruler and form a top down hierarchy of authority.
The ruler of a nation, on the authority given, enforces conduct both within the nation and with other nations. Making demands on people invokes the dependency pledged as a force owed the ruler for success of control and the result further reinforces the ruler’s control.
The United States of America’s Constitution is a proclamation sustaining growth and control by a sovereign account based upon a single Constitution’s executory authority.