If it is called "paper money", then presumably, it was made from paper.
Paper money is commonly called 钞票 chao(1) piao(4) in Mandarin.
Paper money was invented not discovered. Probably by the Chinese.
Paper money is too difficult to carry.
George Washington
PayPal
Coins and paper
The Chinese
It was used when china had invaders coming, this paper money protected them and the Chinese gave the invaders some money to go away.
Paypal
in the 21st century
The Chinese