I'm not hating I'm half Bangal myself

Its just its pretty obvious the west was better in every way Other than not being infested with muzzies it was also just coincidentally() richer, industrial etc etc. And you could say Kolkata was the cause of that but if you actually trace EIC history it becomes clear Bengali(and some West Indian) UCs played a major role in their mercantile empire so it wasn't just on a whim that their capital was built there, the rise of EIC was linked directly with rise of local mercantile elite. It was such Hindus who finally liberated Kashi for example.

There's a reason no kingdom based out of the east has ever ruled the west Trace your ancestry and you might find some priest given a land grant by some prince who conquered a dozen abbo villages in the jungle after losing the struggle for Gauda.