The correct answer is 1938. Hyderabad State CongressIt was a political party in the princely state of Hyderabad. It was formed in 1938. It opposed the autocratic rule of the Nizam of Hyderabad and the militancy of the Razakars. It sought civil rights, representative democracy, and the union of Hyderabad with the Republic of India. The Hyderabad State Congress began actively campaigning for the state of Hyderabad to join the Union of India upon independence, which the Nizam was resisting. The State Congress called for 7 August 1947 to be observed as "Join Indian Union" Day.