Assam is the largest producer of Muga silk in the world. Madan Mohan Malviya was an Indian freedom fighter popularly known as "Mahamana". After independence, Dr. B.R. Ambedkar held the portfolio of Law Minister in the independent Indian government. Andhra Pradesh has the second longest coastline in India. The Krishnarajasagar Dam was built on the Cauvery River with Sir M. Vishveshwara as the chief engineer.