An agreed set of rules prescribing the governance of a country can be the

An agreed set of rules prescribing the governance of a country can be the Constitution. A constitution is a set of fundamental principles or established precedents that a state or other organization is governed by. It serves as a framework for the organization of government, the relationship between the government and the people, and the rights and duties of citizens. A constitution typically outlines the powers and duties of the government, establishes the structure of the government, and sets limits on its power. It is often considered the supreme law of the land and is typically difficult to amend.