beset with political turmoil: Indian participation in World War II, the Congress' final push for non-cooperation, and an upsurge of Muslim nationalism led by the All-India Muslim League. The escalating political tension was capped by Independence in 1947. The jubilation was tempered by the bloody partition of colonial India into India and Pakistan. Independence Day before Independence At the 1929 session of the Indian National Congress, the Purna Swaraj declaration, or "Declaration of the Independence of India" was promulgated, and 26 January was declared as Independence Day in 1930. The Congress called on people to pledge themselves to civil disobedience and "to carry out the Congress instructions issued from time to time" until India attained complete independence. Celebration of such an Independence Day was envisioned to stoke nationalistic fervour among Indian citizens, and to force the British government to consider granting independence. The Congress observed 26 January as the Independence Day between 1930 and 1946. The celebration was marked by meetings where the attendants took the "pledge of independence". Jawaharlal Nehru described in his autobiography that such meetings were peaceful, solemn, and "without any speeches or exhortation". Gandhi envisaged that besides the meetings, the day would be spent " ... in doing some constructive work, whether it is spinning, or service of 'untouchables,' or reunion of Hindus and Mussalmans, or prohibition work, or even all these together". Following actual independence in 1947, the Constitution of India came into effect on and from 26 January 1950; since then 26 January is celebrated as Republic Day. Immediate background In 1946, the Labour government in Britain, its exchequer exhausted by the recently concluded World War II, realised that it had neither the mandate at home, the international support nor the reliability of native forces for continuing to maintain control in an increasingly restless India. On 20 February 1947, Prime Minister Clement Attlee announced that the British government would grant full self-governance to British India by June 1948 at the latest. The new viceroy, Lord Mountbatten, advanced the date for the transfer of power, believing the continuous contention between the Congress and the Muslim League might lead to a collapse of the interim government. He chose the second anniversary of Japan's surrender in World War II, 15 August, as the date of power transfer. The British government announced on 3 June 1947 that it had accepted the idea of partitioning British India into two