Switzerland, Iceland, Denmark and Norway are the world's happiest countries, according to the 2015 World Happiness Report, which is put out by some influential economists.
What if any country could be happier? This report outlines the prime driver behind the happier countries in the world. They tend to be smaller, with Canada as the largest, and consistently have strong social capital. Political structures and policies like mergers and bailouts do not increase national happiness. It's the thrivancy of the social fabric and participatory democracy that makes the difference.