Why do we need the Constitution?

Instruction:

In this question the need for a constitution should be established, i.e., why there was a need for a constitution and how it turned out to be for the welfare of the country. The answer should be mentioned in points listing the importance of the constitution.
Solution:

A Constitution is required for every country to function properly. Without a Constitution, it is impossible to imagine how a country is run. It reflects the aspirations of the citizens and ideals that form the basis of the country.

The constitution defines the nature of the political system of a country. For instance, it tells whether a country is democratic or not.

It defines the right of the person over the state and other persons and restricts the exercise of unlimited power of the ruling government so that the government may not misuse its power.