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 do not agree with what you say. I think if the World only uses the single currency, the economy will be more devastated. Because every country needs the currency of his country to meet the needs of his life. There is no way we can all survive only with a single currency. And I also prefer to use my own country's currency.