The constitution was framed by the Constituent Assembly of India, set-up on 16th May 1946, in accordance with the Cabinet Mission Plan, under the Chairmanship of Sachidandanand Sinha, initially. Dr Rajendra Prasad and HC Mukherjee were elected as the presedent and vice-president respectively on 11th December 1946. BN Rau was appointed as the constitutional Advisor.
The total membership of the Constituent Assembly was 389 of these 292 were representatives of British States; 93 were representatives of Princely States and 4 were from the Chief Commissioners Provinces of Delhi, Ajmer-Merwara, Coorg and British Baluchistan.
The Chairman of the Drafting Committee was Dr BR Ambedkar, also known as the Father of the Indian Constitution.
ENACTMENT OF THE CONSTITUTION
The Constituent Assembly took 2 years, 11 months and 18 days to complete the Constitution.
Some of the provisions related to citizenship, elections, provisional Parliament etc were given immediate effect.
The Constitution, is adopted on 26th November, 1949, contained a Preamble 395 Articles divided into 22 Parts and 8 Schedules.
The Constitution was delayed till 26 January because, in 1929, on this day Indian National Congress demanded Poorna SWaraj in Lahore Session, Chaired by JL Nehru.
The Constitution came into force on 26th January, 1950, known as Republic Day of India. The Constituent Assembly adopted our National Flag on 22nd July, 1947. It was designed by Pingali Venkayya.