is it possible that we can use bitcoins in buying all commodities not only in one country but the entire wold? and how will this affect the economy.
Yes, we can use the bitcoin to buy commodities if the country accepts the bitcoin. But you say worldwide I dont think bitcoin use. There is still country dont recognize the bitcoin, it will not be Speaking of the economy I think if they use the bitcoin the economy of the country will increase. The economy of the country doesnt accept the bitcoin will be the same no changes at all.