The correct answer is (b). The State Reorganisation Commission was established in 1956. It was a commission set up by the Government of India to recommend the reorganization of the states of India on linguistic and cultural lines. The commission submitted its report in 1955, and the recommendations were implemented in 1956. The reorganization of the states led to the creation of 14 new states and 6 new union territories.
The other options are incorrect. Option (a) is incorrect because the State Reorganisation Commission was established in 1956, not 1953. Option (c) is incorrect because the State Reorganisation Commission was established in 1956, not 1957. Option (d) is incorrect because the State Reorganisation Commission was established in 1956, not 1960.
The State Reorganisation Commission was a significant event in the history of India. It led to the reorganization of the states on linguistic and cultural lines, which had a major impact on the political and social landscape of India.