There are many places or city which lagged behind other city .for example begusarai once part of Munger district till1972 is now much better developed city than Munger and surprisingly now in 2021 it is even ahead of bhagalpur.patna was always a bigger city hence it has connectivity better than other cities of bihar.so sometimes local investment also matters.in my imagination too never thought of begusarai and purnea will get ahead of bhagalpur but now in 2021 it has become reality.Or either you should have MPs like Nishikant ji and manoj sinha for Ghazipur .