Yeah...absolutely no country...
Let's forget New Zeeland and Australia because they were actual colonies, let's forget South Africa because of imperialism, the same for Singapore and Hong Kong, or the products of external meddling like South Korea.
The only ones that did not flourish are the ones that are not flourishing even now, independent and making their own decision.
Speaking of Chinese, this is the uncomfortable truth, of course, if a white man would have said that he would be labeled a racist and stoned to death with tweets and pokes.