It is easy to say about 3 dominant ethnicities of Pakistan that both Indians and Pakistanis share the same soil,
1. Sindhis share the Sindh soil both Indians and Pakistanis. Thus their histories are same as their geography.
2. Urdu Speaking share UP and Bihar and old Hyderabad Deccan. Thus their histories are same as their geography.
3. Punjabis share the soil of Punjab. Thus both Indians and Pakistanis share the Punjabi history and geography.
These three constitute almost 160+ million people of Pakistan out of a total of 200 millions.
Pashtuns though do not have direct share of modern day India. However most of the cities of KPK have a long history with Indians as far as Kolkatta. All thanks to the Grand Trunk Road (GT Road).
So when I talk about sharing histories, you gotta understand the proper reference,
The parts we share, we should be proud,
and the parts where we are unique, we should be proud.
Just remember that Europeans share a history even though they can still maintain their distinct identities.
Every Gora is not an Englishman
And
Every Brown is not an Indian.
Only uneducated people would equate all goras or all browns or all blacks or all ...........
peace
Old India is not New India which got independence in 1947. I as a Pakistani do not share any history with New India.
Have you ever even been to India or are you just an Indian movie fan.
Or are you a senior citizen around 80 years old who is home-sick.
There is no harm in having good relations with all our neighbours including India. Infact we must make endeavours to have good relations with India as well.
But not at the cost of handing over my identity as a Pakistani and replacing it with a common pseudo-Indian identity that does not exist. What frivolity!
If you are so fond of your Indian identity, you may like to settle in India - taakay tumhein apni auqat ka pata lag sakay.