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A long time ago people used to trade. For example you give somebody 1 apple than you give him 1 corn. People also traded tin, iron, gold, and cattle. The problem is that things had to be of similar value.
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The Greeks first starting making coins 2600 years ago. They made it from bronze and silver. Some people kept their money with the goldsmit.
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Barter is when a fisherman and a hunter exchanged goods like fish and fur. This is before trading and gold.
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In China people used to buy things with shells. People in the west did not know about it.
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In 1816 they used paper money that rispresnt gold.
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Credit cards were first used in the United States in the 1950's. Most of the money in the world is now invsible.
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The first paper money was used in China in 806.
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In the future people will use digital money.
