What is the main purpose of a constitution in a government?

The main purpose of a constitution in a government is to outline the structure of that government. A constitution serves as the foundational legal framework, establishing the roles and responsibilities of different branches of government, how they relate to one another, and the procedures through which they operate. By defining the organization of government—such as legislative, executive, and judicial branches—a constitution is essential for ensuring that power is distributed and checks and balances are maintained.

In addition to outlining government structure, a constitution may also serve other functions, such as establishing laws, limiting government power, and enumerating citizens' rights. However, the primary function is to create a clear blueprint for governance that helps maintain order and establish accountability within the governmental framework. This foundational role is what distinguishes a constitution from other legal documents or laws.