Mayflower compact
The rules of a language is called its syntax.
The family that rules a country is called a "dynasty."
Protocol.
The Declaration of Independence
The constitution of a country is its highest law. It's a set of rules and principles according to which a country is governed.
colony
A colony
Such a "set of rules" is called a "protocol". The protocol in this specific case is called HTTP.
a banana
protocol
A small group that rules a country after taking it over by force is typically called a junta or a military dictatorship.