I know El Salvador has bitcoin as a legal tender, but can only be used as a means of payment and transaction which also works in other countries.
El Salvador has USD as a legal tender. That makes bitcoin to be a legal tender in the country to be easy as they do not have their own fiat. But another country that makes bitcoin a legal tender is CAR and also an island in Honduras. Other countries can do the same if they want but they will prefer not to do so but prefer just on their fiat.
What do you think will be the fate of our Economy..?
Bitcoin is increasing in value. It will be better than fiat but other things has to be put in place so to make a good effect on the economy. Only bitcoin can not make the economy good.