I'm a bit stumped that you don't consider treaties and agreements to be legalities.
I mean sure, in the 50s the main driver of prosperity was whether a country had avoided being invaded and that isn't necessarily a result of a country's legal system. But the 50s was a very long time ago now and the era since then has been quite equal-opportunity outside pockets of disaster in Africa and the Middle East. The USSR, Chinese, Euro and US experiences haven't been determined by external factors or historical determinism as much as internal policy choices made in the 60s, 70s, 80s, 90s and 00s with a 20-30 year lag before the decisions start to turn up in real life.
Even if we indulge in wild conspiracy and pretend there is a shadowy cabal in Washington that decided to crush the USSR and exalt China economically, that cabal would have had to implement its decisions by somehow guiding internal policy choices in the respective nations. Nobody has managed to do anything to either of them through external pressure that holds a candle to the internal choices made.
I mean sure, in the 50s the main driver of prosperity was whether a country had avoided being invaded and that isn't necessarily a result of a country's legal system. But the 50s was a very long time ago now and the era since then has been quite equal-opportunity outside pockets of disaster in Africa and the Middle East. The USSR, Chinese, Euro and US experiences haven't been determined by external factors or historical determinism as much as internal policy choices made in the 60s, 70s, 80s, 90s and 00s with a 20-30 year lag before the decisions start to turn up in real life.
Even if we indulge in wild conspiracy and pretend there is a shadowy cabal in Washington that decided to crush the USSR and exalt China economically, that cabal would have had to implement its decisions by somehow guiding internal policy choices in the respective nations. Nobody has managed to do anything to either of them through external pressure that holds a candle to the internal choices made.