the partition of India in 1974 was mainly due because of religious matters and of the high population of Muslims, Hindus ,and Sikhs in the area.Bangladesh and Pakistan became a muslim-majority country and India became a Sikh and hindu-majority Country
also Hindus and Sikhs got a long more than Muslims because of the same language and Muslims were used to Urdu and Arabic as their language and the Hindus and Sikhs adopted as a language called Hindi as there main language