Explanation:

 Bhagalpur is a town with historical importance situated on the banks of the river Ganga in the state of Eastern Bihar. Once considered as the biggest trade centre of Eastern India, the city is famous for its unique silk fabrics called 'Tussah or Tusser'. Silk weaving is an age old tradition in the city. Fabrics produced in the city are famous both at the domestic and the international market. Bhagalpur cluster ranks the second highest, next to Karnataka in the production and exports of silk fabrics. It has been named as the Silk City due to its popularity for Bhagalpuri silk.