How have the centre-state relations been restructured to strengthen federalism?

The centre state relations have been restructured to strengthen federalism in the following ways. (i) Linguistic States : After independence, in 1950 the boundaries of several old states were changed in order to create new states. This was done to ensure that the people who spoke the same language, share the same culture, ethnicity could live in the same state.
(ii) Language Policy : Besides Hindi, 21 other languages were in the eighth schedule of the Indian constitution. Though Hindi was identified as the optional langiage but the central Government did not impose Hindi on states where people spoke a different language.
(iii) Centre – State Relations : It is the care of federalism and they are regulated by the provisions of the constitution. Indian constitution has demarcated the powers of the union and the state governments but still the Union Government can have influence over the state in many ways.