Explanation:

In January 1896, Hindi was made official language of Sambalpur, by abolishing Odia language, which after violent protests by people was reinstated again. During the partition of Bengal in 1905 Sambalpur and the adjacent Odia-speaking tracts were amalgamated with the Odisha Division under Bengal Presidency. Bengal's Odisha division became part of the new province of Bihar and Odisha in 1912, and in April 1936 became the separate province of Odisha, with addition of Undivided Ganjam and Koraput districts from Madras Presidency. After Indian Independence on 15 August 1947, Odisha became an Indian state. The rulers of the princely states of Western Odisha acceded to the Government of India in January 1948 and became part of Odisha state.