You are off-base with your diversity comment—Singapore is very diverse and the government has gone to a number of lengths to preserve that. Also, not sure that I agree with your social peace comment either. One can maintain peaceful society without a single political party crushing all opposition with an iron fist.
I presume you don’t live in Singapore...
Or China, which has the same Confucian roots, single party rule and appears to be copying Singapore far more than the West...
Its very diverse, too. But I wasn’t talking about that kind of diversity. American style pluralism is exceedingly rare in our world. It works for us but not necessarily for other cultures.