Indeed many of the current holder of bitcoin spread in various countries. I am very sure later adaptation of bitcoin will spread across the world. But to be main currency, I think regulation is still a constraint for bitcoin but I wish the main countries in the world can be a precursor to adapt bitcoin
Yes now a lot of countries are accepting bitcoin they are making legal currency it for their country, it is the new age and we can use only digital currency for payment of goods. Online payment is being a source of the bitcoin promotion it is very easy to have bitcoin business throughout the whole world. Slowly bitcoin is being popular and high in price; I want a lot of thing to happen just as source of income after hearing the legalization news.