book contain :-

The world has so many superpowers
but why was the dollar made the global currency, leaving aside everyone's currency?

What was the compulsion of the other countries that they were forced to make the US dollar the global currency?
No matter how big a super power it is, whether it is Russia?
If US imposes sanctions then
why does the economy of that country standstill overnight?
And why is only US sanction talked about?