Explanation:

Chittaranjan Das popularly called Deshbandhu (Friend of the Nation), was an Indian freedom fighter, political activist and lawyer during the Indian independence movement and founder-leader of the Swaraj Party (Independence party) in Bengal during the period of British colonial rule in India. His name is abbreviated as C. R. Das.

Chittaranjan Das was born in Calcutta on 5 November 1870 in a well-known Baidya family of Bikrampur, Dhaka, Bangladesh. Bikrampur has a long historical and cultural trail since many centuries. In the 12th century it was the capital of Ballal Sena and Lakshmana Sena, Kings of Sena dynasty and since then considered as an important seat of learning and culture of Eastern India.