Telangana
When India became independent from the British Empire in 1947, the Nizam of Hyderabad did not want to merge with the Indian Union and wanted to remain independent. The Government of India annexed Hyderabad State on 17 September 1948 after a military operation called Operation Polo. It appointed a civil servant, M. K. Vellodi, as first chief minister of Hyderabad State on 26 January 1950. He administered the state with the help of English-educated bureaucrats from the Madras and Bombay states, who were familiar with British systems of administration unlike the bureaucrats of Hyderabad State who used a completely different administrative system. The official language of the state was switched from Urdu to English.
Independence Day (India)
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 states; the successor governments would be given dominion status and would have an implicit right to secede from the British Commonwealth. The Indian Independence Act 1947 (10 & 11 Geo 6 c. 30) of the Parliament of the United Kingdom partitioned British India into the two new independent dominions of India and Pakistan (including what is now Bangladesh) with effect from 15 August 1947, and granted complete legislative authority upon the respective constituent assemblies of the new countries. The Act received royal assent on 18 July 1947.