there are many country in this world is Governmentally accepted The Cryptocurrencies, like japan accepting Bitcoin as legal tender.
Also there are some country who did not accept The Cryptocurrencies and has strict law about Cryptocurrencies, like Bangladesh.
so here are some good info about this:
https://blogs.thomsonreuters.com/answerson/world-cryptocurrencies-countryI think it will be helpful for all.
I think we should be giving time and as the time goes on passing we will be seeing each and every country accepting bitcoins and other altcoins as one of the major currency and as a legal tender. Right now only Japan has come forward in accepting the bitcoins and other Cryptocurrencies but countries are planning to make some good and strict rules and regulations in controlling them and all this process will take some time to implement and work on consistant basis. I am sure that my country India is reacting in positive direction towards the cryptocurrency and bitcoins.