There are many different opinions for this answer but the most common answer for cleanest country would be SWITZERLAND
Pakistan is the cleanest country in the world
No
U.a.e
Canada.
Yes because it produces the most amount of oil and the cleanest oil in the world
My India
the second cleanest country in Aisa
Yes no dur
The word cleanest is an adjective. It means to be the most clean.
Switzerland has the best environmental performance of any nation so it is highly likely this nation has the cleanest air.
Because of it's healthy lifestyle