Question

why trade is necessary?​

Answer 1

Answer:

Trade increases competition and lowers world prices, which provides benefits to consumers by raising the purchasing power of their own income, and leads a rise in consumer surplus. Trade also breaks down domestic monopolies, which face competition from more efficient foreign firms.

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Answer 2

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Trade is important because all countries have limited resources to respond to their people's needs. So countries trade with one another to complete each other's needs.