Punjabi Suba
The Akali Dal, a Sikh-dominated political party active mainly in Punjab, sought to create a Punjabi Suba (a Punjabi-majority) province. This new state would be a Sikh-majority state, which caused concern among the Punjabi Hindus. The Sikh leaders such Fateh Singh tactically stressed the linguistic basis of the demand, while downplaying its religious basis — a state where the distinct Sikh identity could be preserved. The Hindu newspapers from Jalandhar, exhorted the Punjabi Hindus to declare Hindi as their "mother tongue", so that the Punjabi Suba proponents could be deprived of the argument that their demand was solely linguistic.
The States Reorganization Commission rejected the demand for a Punjabi-majority state saying that it lacked a majority support and that Punjabi was not grammatically very distinct from Hindi. The Patiala and East Punjab States Union (PEPSU) was merged with Punjab, though. Akali Dal continued its movement, which later led to the formation of the Sikh-majority Punjab state.
Read more about this topic: States Reorganisation Commission, Controversies