Constitutional Architecture
Indian Constitution — historical underpinnings, evolution, features, amendments, significant provisions and basic structure.— UPSC Mains Syllabus
The Constitution's foundation: CAD as origin point, the Preamble as philosophical anchor, fundamental features, the Basic Structure doctrine (Kesavananda Bharati 1973), and the amendment procedure. Every GS2 answer ultimately rests on a constitutional foundation — this is the load-bearing wall of the paper.
NCERT References
Chapters with a link open the NCERT Companion page.
Standard Textbooks
M. Laxmikanth: Indian Polity
DD Basu: Introduction to the Constitution of India
Supplementary Sources
Also relevant when writing this answer
These nodes commonly intersect with this one in real Mains questions. The connection is explained below each link.
Federalism & Centre-State Relations
Constitutional architecture is the foundation from which all federalism debates derive. Centre-State tension requires both textual provisions and federal dynamics.
“Cooperative federalism questions invoke the constitutional architecture — at minimum the Seventh Schedule.”
Constitutional Morality & Public Virtue
GS4 tests constitutional morality as an ethical value. The GS2 constitutional knowledge is the factual anchor; GS4 is the normative application.
“GS4 prompts on 'morality of law vs morality of the majority' draw from this node's constitutional knowledge.”