Having done a lot of observing people, lots of people, in different countries on three continents all going about their daily lives, I reckon the success or otherwise of a country depends pretty much entirely on the ability of any two people of that country picked an random to trust one each other.
The complexities associated with the management of organizations whose activities take place in multiple and different countries, separated by geographic distance and time, increase the difficulties of observing and making sense of non-financial consequences of finance-related decisions, as well as of the impact of financial decisions on strategic moves.