A. The Constituent Assembly:
- Formed in 1946 under the recommendations of the Cabinet Mission Plan.
- First sitting held on December 9, 1946 (Dr. Sachchidananda Sinha as interim president).
- On December 11, 1946, Dr. Rajendra Prasad was elected permanent President of the Constituent Assembly.
- Dr. B.R. Ambedkar was appointed Chairman of the 7-member Drafting Committee; celebrated as the "Father of the Constitution of India".
- Took 2 years, 11 months, and 18 days to complete; adopted on November 26, 1949 (celebrated annually as *Constitution Day*).
- Came into full legal force on January 26, 1950 (Republic Day), deliberately chosen to honor the historic declaration of Purna Swaraj (Complete Independence) made by the Congress at Lahore in 1930.
B. The Preamble — Key Terminology:
The Preamble serves as the preface and philosophical guiding light of the Constitution:
- Sovereign: India is completely independent internally and externally; no foreign power can dictate its domestic laws or foreign policy.
- Socialist: (Added by the 42nd Amendment, 1976) A democratic socialist welfare state striving to eliminate socio-economic inequality and poverty.
- Secular: (Added by the 42nd Amendment, 1976) The state has no official state religion; treats all religions with equal respect (*Sarva Dharma Sambhava*).
- Democratic: Government of the people, by the people, and for the people, elected through Universal Adult Suffrage.
- Republic: The Head of the State (the President of India) is an elected citizen holding office for a fixed term, not a hereditary monarch.