Could you see a future wherein the entire world shares one global currency, be it fiat or crypto? If I think it in a scifi kind of way, it would most probably be some digital currency that could all just use. It doesn't even have to be in this century. Maybe the next?
Well i do consider USD as a global currency, but to have one single currency for every country is hard to be true. The reasons is cause every country need to manage their own finance and also the money is use for monetary policy and i believe it could'nt be done with single currency.
monetary policy could be main reason for every country to reject using one global currency.it could be very contradictive with other country policy.