trade - when people use money to buy goods and services, barter - when one person gives a good or service to another in exchange for a different good or service and NO MONEY is used, supply - the amount of goods or services that people can sell, demand - the amount of goods and services that people can buy and want, import - to bring products and resources into one country from another, export - to send products and resources from one country to another, budget - a plan that shows your income (money earned), expenses (money spent), and savings (money kept to use at a later time),

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