>But I also wonder what's wrong with other currencies and why they are not used more often.
I think that they are less stable and more controlled by their countries of origin. The US has, relative to the rest of the world, an exceptionally stable political system, little control over the dollar, and a huge economy.
I think that they are less stable and more controlled by their countries of origin. The US has, relative to the rest of the world, an exceptionally stable political system, little control over the dollar, and a huge economy.