Progress not at the cost of killing a rich heritage and culture.. Moreove you have ways to progress without killing the traces of heritage..Good that you have questions. I am referring to simple logic here..Look at the difference between river Ganga (Ganges) at Gangotri and the same at Culcutta, you have clue..Look at the changes that are happening for last 100yrs. And it is the study, not a straight answer.
