George Washington’s army and himself
He is the one that said " If men were angles, no government would be necessary."
The primary difference between barter and currency systems is that a currency system uses an agreed-upon form of paper or coin money as an exchange system rather than directly trading goods and services through bartering.
The answer is each country has its own system because of different cultures because the world of that was
Where's the image? Once you post it, I'll be able to help!