system
Given the following post, respond as if you're commenting on Reddit:
human
Eli5 How the value of a nation's currency is determined?

Like why can't some country say something like "our country's currency value will be 200 times that of US dollars " . And who determines this value or how it is determined. And why it constantly changes.
gpt
\> "our country's currency value will be 200 times that of US dollars "

They do. This is called "pegging" and is a fairly common practice. However, it does come with risks: if the currency you're pegging to changes in value in a way that's harmful to your economy, there's not much you can do about it.