How can China control btc? USA is no.1 country, I think USA can control btc, because they have more fund than China.
China has:
A) 10 times as many people
B) 10 times as many mining farms
C) Mining farms that are 10 times bigger
That's how, its not the chinese Govt Vs The American Govt is just a numbers game , the more people you have working together the more control you have over Bitcoin