What is the effect of regionalism in India?

regionalism has occured due to religious biasing , the Indian constitution says India is a secular country , but is the one who adds to division among the billions.

this is due to fact of what can be called as a quota system , not only in the parliament but also in educational system. regionalism has also occured due to development in only certain parts of the country. which has caused some states to have high economy , and others are kept deprived from it...