i think it is japan?
it's obviously, the Us is the most advanced in the world as long as the most powerful country in the entire world....
OBVIOUSLY THE USA.
AT LEAST FOR THE LAST FORTY YEARS.
Without question the USA which provided sanctuary for most of the German scientists at the conclusion to WW2 and who subsequently invented the space rocket with all its subsidiary benefits. It is also the US which is suppressing many other scientific discoveries to preserve its own economy.
Japan is renowned for copying inventions. It was an American economist whose influence made Japan one of the worlds greatest industrial and electronic nations post WW2 yet his methods were ignored in the US.
Australia, the EU countries, Canada, and others, all fallow in the wake of the US.
china for making it. america for putting it to use.