What is the Fiat Standard?

The Fiat standard is what we are currently in. Nobody asked for it, it was done out of desperation. Nobody questioned it, but it is the one the main reasons why so many people are suffering. So it is pivotal for all everyday muslim, average person, in general, to understand what monetary system they were FORCED to be in.
Sources:
https://www.forbes.com/advisor/wp-content/uploads/2023/03/Image-1-e1678258156995-568x322.jpg
http://afe.easia.columbia.edu/songdynasty-module/econ-rev-money.html
https://ciaotest.cc.columbia.edu/olj/cato/v20n3/cato_v20n3dok01.pdf