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 think so. This will not make the economy more stable instead of destroying the world's economy. Every country needs the currency of each country, no one can live without the currency of his country. And I'm sure the Government of every country will definitely protect the currency of the country and do not want to be replaced by any currency.
While it is true that many countries will try to protect their own currencies what are they going to do if some of the biggest countries around the world begin to adopt all of them the very same currency and then they avoid dealing with them unless they adopt this new single world currency? They will have no option but to adopt it or go bankrupt and then adopt it anyway.