Evaluate the historical origins and functional objectives of the Directive Principles of State Policy (DPSP) within the Indian constitutional framework:
1. The directives function as an interpretive guide, actively assisting the judiciary in assessing the constitutional validity of legislative enactments.
2. The framework was directly inspired by and structurally mirrors the 'Instrument of Instructions' issued under the Government of India Act, 1935.
3. The primary constitutional mandate of the directives is to establish and promote the foundational ideals of political democracy.