After the partition on the basis of religion the then PM Nehru was apprehensive of dividing country further on the basis of language, but there was a high demand for it especially from regional congress communities.
Dhar commission was set up to consider the situation, he advised that dividing states on linguistic basis would threaten the unity of the nation.
After Independence, speakers of Telugu asked the Congress to implement its old resolution in favor of linguistic states.in 1952 first state, Andhra Pradesh was formed on linguistic basis.