Step 1: Understanding the Concept:
Scholars analyze the Indian Constitution from various perspectives, highlighting its role in driving social change and political stability.
Step 2: Detailed Explanation:
Granville Austin, a noted American historian of the Indian Constitution, described it as a 'social document' in his famous work, "The Indian Constitution: Cornerstone of a Nation".
He argued that the Constitution's core is its commitment to social revolution, primarily embodied in the Fundamental Rights and the Directive Principles of State Policy.
Step 3: Final Answer:
Granville Austin is the scholar who coined the term 'social document' for the Indian Constitution.