It turns out that China is the happiest country in the world (100/100) and North Korea is only two points behind as the the 2nd happiest (98/100). It is amazing what a difference a few hundred feet and a communist regime can make. South Korea is only the 152nd happiest in the world (18/100). As for the US, it is so low in happiest (203rd) that is has no score.
According to the Human Rights Watch, the making of the second happiest place on Earth takes a careful balance. First, you must have 150,000 to 200,000 prisoners. You then add systemic torture, starvation, rape, murder, medical experimentation, forced labour, and forced abortions. You then imprison people within your borders to leaving. Voilà, you have one of the happiest place on Earth.
Source: Hangu as first seen on Reddit