Explanation:

Ram Narayan Singh often referred to as Babu Ram Narayan Singh (1885-1964) was a noted freedom fighter, social worker and politician from Hazaribagh. He and his brother Sukhlal Singh was among the early Congress workers from Chatra, who lead in Non-co-operation movement with other young congress leaders like Krishna Ballabh Sahay, Raj Ballabh Singh, Badri Singh of Koderma. They also propagated Khadi and mingled with Santhal leaders like Opan Manjhi, Bangma Manjhi for the social reform movement. He and Krishna Ballabh Sahay were firstly imprisoned for a month by British during 1920-21.