If the world uses a single currency, will the economy be more stable?
This is a very interesting question. The sovereign nations issue their own currencies and are taken for granted by many people, but few consider whether this is the economically optimal option.
I think it would be great if the world uses single money and maybe bitcoin is the choice. But it seems to be difficult because the government will not let the paper money disappear.
I think that this will not be accepted by those countries with low economic growth. As the economy of different countries if the common currency is too high will affect the economy of the low-value countries. or too low, the developing countries will not accept it.