[lomnakkus]

I am not wrong. My native country did this experiment about 200-300 years ago -- it failed badly, and that was with a very small population which was (geographically) widely distributed.

Trying to read (as schoolchildren) a few samples of text written in different dialects during that time dispelled any notion that it was a good idea.

Also: China (as another poster pointed out).

EDIT: Btw, if you have a good grasp of English accents, it's pretty easy to see what kind of chaos would occur in a country as small as England. (Thinking of the "north south divide" thing.)