One of the first money things I learnt about in school actually. Now I'm just putting it as I remember, and how the basics went, but we had in our country a period where the Japanese occupied and printed their own local money. But they kept printing more and more of it to give out to locals and try to quickly establish a new cash economy (they had to displace at least 2 systems that pre-existed).

Goods soared in price, and the scenes we're seeing now in some parts of Africa, the Middle East, and South America, where people are buying food with wheelbarrows of money, that's what my grandparents said happen.

And those businesses and people who bet on the Japanese staying for good, well, they lost a lot, while actually holding a lot of cash, when hyperinflation hit the roof. Those who preferred to hang on to old currency, or gold, waited out the occupation and made it out alive. It does make me wonder now what happened to stocks

Anyway, they were so numerous you can still buy these notes in mint condition in tourist shops and flea markets. We call them banana money (as they printed bananas on the notes haha). They were used in basic school to teach us about inflation.

That said, there are countries still betting on the dollar... and with euroskeptics getting stronger and the global south scattering their fortunes and still opting for dollarisation, I doubt anything catastrophic happens to the dollar in our lifetimes.