What is constitution​

Constitution is a document which contains details of how to govern a country. It is a framework within which a government has to function. It defines the powers of different organs of the government and also enumerates the rights and duties of citizens.

classical republicanism, also known as civic humanism, is a form of republicanism  developed in the renaissance inspired by the governmental forms and writings of  classical  antiquity, especially such  classical  writers as aristotle, polybius, and cicero.