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.
Surya Sen
The Indian independence movement was a series of activities whose ultimate aim was to end the British Raj and encompassed activities and ideas aiming to end the East India Company rule (1757–1857) and the British Raj (1857–1947) in the Indian subcontinent. The movement spanned a total of 90 years (1857–1947) considering movement against the British Indian Empire. The Indian Independence movement includes both protest and militant (violent) mechanisms to root out British Administration from India.