Question

why was January 26 chosen for the commencement of the constitution
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Answer 1

Answer:

The Constitution of India came into force on 26 January 1950. ... 26 January was chosen as the date for Republic day because it was on this day in 1929 when the Declaration of Indian Independence (Purna Swaraj) was proclaimed by the Indian National Congress as opposed to the Dominion status offered by the British Regime

Answer 2

Explanation:

The reason January 26 was picked as the day for the constitution to come into force is because in 1929, during the Lahore Session of the Indian National Congress, where Jawaharlal Nehru was elected president, a resolution was passed demanding complete independence for the first time.