I am from a third world country and I do think that if our government can embrace cryptocurrencies most of the financial problems my country is having will be a thing of the past. I remember how a country in Africa has its currency valueless because of the effect of dollars on their money. If this country accepts cryptocurrencies or bitcoin that is decentralized as their currency I do believe that, this will not happen and the issues of internet I don't think will be a problem as most community has internet access now and it will be easier to be thought for those that did not have the knowledge on how to used internet.
Why do you think it is going to help your country?
It's the same belief in the magic pill that everyone is pointing out.
Changing your currency to bitcoin or pegging it to bitcoin would be right now a total disaster for a country that is trying to develop its economy. You will get rid of inflation but you will experience heavy deflation at the point you will need to print money to keep the economy stable, exports will be destroyed, imports will dominate the markets, your trade
balance will be a vertical line

and what is worse, the difference between those that were poor and the rich will become even bigger.
A far easier solution would be to peg your currency to a basket of currencies like the USD, EUR YEN and thus canceling the possibility of hyperinflations. Bulgaria, for example, is working with a pegged currency to the euro.
Also banks will possible be able to issue some Crypto cards where you could use your fiat as a crypto currency.
Wow, this tops a lot of crazy ideas I've seen on this forum