If it is called "paper money", then presumably, it was made from paper.
Paper money was invented not discovered. Probably by the Chinese.
Yuan is the currency of China. Money in Chinese is 钱
Paper money is too difficult to carry.
The Chinese
Coins and paper
PayPal
It was used when china had invaders coming, this paper money protected them and the Chinese gave the invaders some money to go away.
in the 21st century
The Chinese
Paypal
Type your answer here... paper money where it later spread to