I don't think it has to do anything with language.
China mainland is doing awesome in everything in present day context..
and their leaders don't have that good grip in English either,
though they walk around with translators or read out loud, most of the time. 
Do you really think English is the hindrance for development of any nation? 
I am  not opposing one shouldn't have English skill, but the way you sounded
it's ridiculous when almost all words in your post are full of spell errors and
glitches.
And Is it not little immature to assume that they're totally blacked out from other
world when they've access to whole portal to world—internet ? do you really
think they've to depend only on kantipur to check world news? 

Regarding those 'netas' in Nepal, I don't have any words to say. As I read somewhere,
new definitions are on rise for critics like us. I'm just thinking at least it would take
at least three generation to see something good happen there. These current old
leaders, they need to die off first, and they already have cultivated and poisoned
young minds like 'gagan thapa', they need to die off as well.. The third gen probably
will have little influence but they'll certainly have some of those inherited 'aani-baani'. So given
all those age factors, life expectancies, I'd say another 100-150 years, Nepal is not going
anywhere.

OR

only a big miracle or divine intervention can do some magic.