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Bharat Ratna is the highest civilian award of India. It was awarded to M. Visvesvaraya in 1955 for his contributions in the field of engineering and public service. Visvesvaraya was an Indian civil engineer and statesman. He is known for his contributions to the fields of irrigation, water supply, railways, and public health. He also served as the Diwan of Mysore State from 1912 to 1918.