Metta, "It is the fact that India has built a place inside its territory claiming it to be Lumbini, the birthplace of Buddha. Many indian school textbooks and other books mention India as the birthplace of Buddha. Indian documentaries/books on buddhism and religions like to mention India as the birthplace of Buddha, and they show them in international film festivals giving the false information about the birth place of Buddha."
So ? Muslims teach to kill the infadels. Wots your point ? 

Metta,"Do you think if we don't care about the birth place of buddha, people are going to care more and give more importance regarding  गास र बास?" 
Ok lets say that they agree birthplace of Buddha is Lumbini rey ok ... is that going to help the people of Nepal with their gaas and baaas ? I don't see the point of fighting for a cause on empty stomach. If yu have wife and kids YOU TELL ME WHICH IS MORE IMPORTANT FOR YOU ? Putting food on the table or going a a julus for somethingidiotic like this ? 

metta," Don't you think that we could also improve  गास र बास by bringing more tourists to Lumbini? "
I still don't know which tourists you are talking about ? We have been on a do not travel to this country list for over 12 years.

metta,"Are you saying that we should not cheer for nepali sports such as our national cricket or soccer teams until we improve on our  गास र बास issue because we spend on these sports events that could have been spent on  गास र बास?"
Are you talking about the same athletes who go AWOL everytime they are taken to an olypic games, or Asian games ? If you are I am not cheering them.