Explanation:

 Regionalism is not necessarily bad. Not all forms of regionalism are against national unity or nationalism. Regionalism can and has existed within the larger framework of nationalism. In this respect, regionalism has helped various regions put their demands before the central leadership. Regionalism is very much conducive to the idea of federalism. Both are helpful in governing large and diverse countries like India. However, at times regionalism has taken forms of secessionism, which goes against national unity. Similarly, at times it has also given rise to hatred among ethnic groups which disturbs national unity and harmony.