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.
Decolonisation of Asia
The British had competed with Portuguese, Spanish and Dutch for their interests in Asia since the early 17th century and by the mid-19th century held much of India (via the British East India Company), as well as Burma, Ceylon, Malaya and Singapore. After India's First War of Independence of 1857, Queen Victoria was declared Empress of India, thus solidifying the British rule on the subcontinent. The last British acquisition in Asia was the New Territories of Hong Kong, which was leased from the Qing emperor in 1897, expanding the British colony originally ceded in the Treaty of Nanking in 1842.