who prepared the first draught constitution of india
B. N. Rau Sir Benegal Narsing Rau, CIE, (26 February 1887 â€“ 30 November 1953) was an Indian civil servant, jurist, diplomat and statesman known for his key role in drafting the Constitution of India. He was also India's representative to the United Nations Security Council from 1950 to 1952. His brothers were Governor of the Reserve Bank of India Benegal Rama Rau and journalist and politician B. Shiva Rao.