Because of it's healthy lifestyle
Pakistan is the cleanest country in the world
There are many different opinions for this answer but the most common answer for cleanest country would be SWITZERLAND
usa
No
Canada.
U.a.e
Canada
The country is Norway.
My India
the second cleanest country in Aisa
Yes no dur
Switzerland has the best environmental performance of any nation so it is highly likely this nation has the cleanest air.