As though one has mentioned something unmentionable
But free mobility of labor and cultural interchange is a pre-requisite for a nation
The implicit assumption is - the nation has a shared bond that can withstand regional peculiarities of culture
This is not something unprecedented
India is a "nation" precisely because it has been a land with free movement of people and ideas for 2000+ yrs
Let's take some examples
But Tamilakam itself has been influenced by influences from the rest of India since its inception
About 18 clans of the Velirs came down South from Dwaraka (as per some readings) under the leadership of Agastya (a sage who also features interestingly in Vedic literature)
But historians like Ms Romila Thapar and Champakalakshmi have tried to associate the Velirs with the Yadavas of Dwarka
Definitely in the pre-Common era
Not buying their theory. But merely stating it here
Ahicchatra is associated with modern Bareilly a couple of thousand kilometers away in Western UP!
Now Dandin was not native to Tamil country. But a descendant of recent migrants from Vidarbha as per one account
With many religious currents that we take for granted elsewhere having their origins in the valley, suggesting considerable migration out of Kashmir
E.g Pancharatra Agama
Shaiva Siddhanta
Yet they did not originate in the Tamil country. But likely in Kashmir
Worth investigating further
manasataramgini.wordpress.com/2007/03/02/the…
E.g. the great 9th century Kashmiri thinker Jayanta Bhatta, author of works like Agama-Adambara and Nyayamanjari, was not a native of Kashmir, but a descendant of recent migrants from Gauda (Bengal)
But a heterogenous mix of several sects, which is lampooned by Bhatta
Can that be said about the religious scene in Kashmir valley today? No.
The great Advaitin philosopher from 16th cen, Madhusudana Sarasvati was from East Bengal. But his ancestors migrated from modern UP in 12th century
That brings us to the cosmopolitanism of our great cities in the past. E.g. Varanasi - which was a place teeming with scholars from v diverse roots
So 1 in 3 brahmins in Varanasi was from distant Maharashtra
That tells you something about mobility
Carrying surnames like Pant
Govind Vallabh Pant, the politician. Rishabh Pant, the cricketer - likely descendants of these migrants
The near universal presence of Marwaris from Western Rajasthan, in just about every town in India from Kozhikode to Asansol, is indicative of how migration scaled new heights with the advent of railway in 19th cen
India is a nation. Not because of the Raj or some enlightened founders in 1947
But because it has been a contiguous piece of land characterized by high labor mobility and mobility of ideas for 2K years
And there is no reason why it should be an exception
This doesn't mean one should change demographics with a heavy hand
But to cavil at the removal of restrictions is to cavil at the idea of India itself