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
U.a.e
Yes no dur
The cleanest country in Europe, and of the world, as of 2010, is Iceland. This is taken from the Environmental Performance Index which is a UN conducted list that ranks each country on, well, its environmental performance (pollution, scenery, cleanliness, air, waters, etc.).
usa
No
yes dogs dose have the cleanest tough in the world
Canada.
Canada
Yes because it produces the most amount of oil and the cleanest oil in the world
No but it is one cleanest and clearest lakes in the world
Yes Tasmania is said to have the cleanest air in the world because of the low population