Self-determination
In 1947, India gained independence from the British Empire. The empire was in decline but adapted to these circumstances by creating the British Commonwealth—since 1949 the Commonwealth of Nations—which is a free association of equal states. As India obtained its independence, multiple ethnic conflicts emerged in relation to the formation of a statehood during the Partition of India which resulted in Islamic Pakistan and Secular India. Before the advent of the British, no empire based in mainland India had controlled any part of what now makes up the country's Northeast, part of the reason for the ongoing insurgency in Northeast India. In 1971 Bangladesh obtained independence from Pakistan.
Independence Day (Pakistan)
Eventually, in 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. On 3 June 1947, the British government announced that the principle of division of British India into two independent states was accepted. The successor governments would be given dominion status and would have an implicit right to secede from the British Commonwealth. Viceroy Mountbatten chose 15 August, the second anniversary of Japan's surrender in the World War II, as the date of power transfer. He chose 14 August as the date of the ceremony of power transfer to Pakistan because he wanted to attend the ceremonies in both India and Pakistan.