- Constituent Assembly The body responsible for drafting the Constitution of India. - Indirect Election Members of the Constituent Assembly were indirectly elected by the members of the Provincial Legislative Assemblies. - Popular Sovereignty The principle that the authority of a state and its government is created and sustained by the consent of its people, through their elected representatives. - Preamble The introductory statement of the Constitution, which begins with "We, the People of India," emphasizing the source of its authority.