1. The only claim Pakistan has is on the Western part of the ISVC.
2. Bharatvarsh will remain the main inheritor of the ISVC.
Why?
Because we follow a similar way of life.
Because most of the sites are here. Because we value it. All of us. How many new sites have you tried to find out since 47?
Just because the people of the land converted and separated does not mean they take away the culture and the history along with them.
Barcelona may get independence from Spain. Does not mean that Spain will lose claim to El Cid.
The suggestion is beyond stupid to be honest.
So if you wish to claim IVSC
entirely, PLEASE continue to do so. It will remain under 'Indian History' for eternity.
@Paksanity - Ganga valley civilization never existed. Because Ganga is not a valley. It is a plains.