Who had written letters to the British Government offering them cooperation led to a split in the Co...........

Explanation:

Shripad Amrit Dange (10 October 1899 – 22 May 1991) was a founding member of the Communist Party of India (CPI) and a stalwart of Indian trade union movement. During the British Raj, Dange was arrested by the British authorities for communist and trade union activities and was jailed for an overall period of 13 years. After India's Independence, a series of events like Sino-Soviet split, Sino-Indian war, and the revelation that while in jail, Dange had written letters to the British Government, offering them cooperation, led to a split in the Communist Party of India, in 1964.