Nehru signing the Constitution of India. Image Source: link
The Constitution of any country is really a political document. It brings into existence a body politic, a state, and defines what the various organs of the state are to be, what their assigned functions are, and so to say draws the Lakshman Rekha around each organ of the body politic. The interesting thing is what the Preamble of the Constitution of India says. This is what the Preamble says, “We the people of India having solemnly resolved to constitute India into a sovereign, socialist, secular democratic republic”. I may add here that the words ‘socialist’ and ‘secular’ were not there originally, they were added during the emergency, “and to secure to all its citizens justice, social, economic and political, liberty of thought, expression, belief, faith and worship, fraternity assuring the dignity of the individual and the unity and integrity of the nation, in our Constituent Assembly this 26th day of November 1949 do hereby adopt, enact and give unto ourselves this Constitution.” In 1949, this was brought into force and the Republic was constituted on the 26th of January, 1950 which we celebrate as Republic Day.