Before Money

People have exchanged goods and services in many ways.
A farmer has apples. A baker has bread. They can swap if both agree. This is called barter. People have also used gifts, promises and credit. Money did not appear in one single way everywhere.
Trade depends on finding someone who wants what you offer.
Try it
Invent a fair trade with a friend. You can point, draw, type or use your communication tool.
Point to two things people could swap.