If all countries can accepted crypto currencies in there various countries, as a means of payment and as a means of online exchanges, such as money is, money is anything use as a means of exchange and general acceptable. With the means I think all cryptocurrencies (bitcoin) will definitely go round the world, and will be use as a means of exchange. I will be so grateful to the creation of crypto currencies. This will also help our future generation, Remember something when we do international transfer across the countries, it may take a while to get the money to your local bank account, but with cryptocurrency you can get instant reflection if bitcoin etc is transfer to wallet,And you can make use of your coin (bitcoin ETC).
Cryptocurrency could have a big difference when it comes to technology. A lot of countries is already seen cryptocurrency as the future of money because what we have now is just the physical money. Digital transactions in everywhere around the world using the cryptocurrencies is a unique technology. Some countries are interested in cryptocurrencies to make it as one of their assets but there are also some countries that do not trust it and banned it in the countries. Like for example bitcoin, I think we just need time to embrace the technology from bitcoin until it fits the community.