when did the constitution of india came into force
History of the Republic of India The Constituent Assembly adopted the Constitution of India, drafted by a committee headed by Dr. B. R. Ambedkar, on 26 November 1949. India became a sovereign democratic republic after its constitution came into effect on 26 January 1950. Dr. Rajendra Prasad became the first President of India. The three words 'socialist', 'secular' and 'integrity' were added later with the 42nd Constitution Amendment 1976.