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People TRADE (exchange) with each other to get the goods and services they want. To make trade easier, people use MONEY.
When trade is voluntary, both people benefit. Trade without money is called BARTER.
Example: Sally wants Alex’s stuffed animal instead of her used bastetball. Alex would rather have the basketball. By trading, they are both better off. This is also true if Sally or Alex use money instead of bartering.
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