But here's the interesting thing
Muslim Pop in Indian Punjab: 1.6%
Muslim Pop in Indian Bengal: 27.1%
So there was huge emigration of Muslims from Punjab.
Not so from Bengal
Murshidabad : 66%
Malda : 51%
Uttar Dinajpur : 50%
Nothing like it in Punjab where they are in single digits across the state
Whereas in Bengal, the emigration appears to have been more limited.
Whereas Bengal remained complex demographically, with significant Hindu population in East Pakistan and significant muslim population in West Bengal
We tend to think that the demographic mix changed decisively in 1947 (more so in Punjab than Bengal).
But that doesn't mean there weren't major changes in late 19th / early 20th can
The source for these numbers is from this fine paper on Punjab demography
The purpose is not to emote people, but to understand the long run trends and the reality of these provinces
Less so in Punjab, as Punjab was rendered homogeneous on either side by Partition violence
A correction - They were close to a majority...Upwards of 40%. But not quite a majority in all these districts