That's the history of coinage, which came after debt.
Debt is older though. It goes back 5,000 years--at least:
Debt is older though. It goes back 5,000 years--at least:
"Money of exchange" is, yes. And as I said, that is what economists are talking about when they talk about money replacing barter because it solves the double coincidence of wants problem. Money replacing barter has nothing to do with debt.