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Answer:

Money is called a medium of exchange because it serves as a common mode through which people can buy what they want and sell what they have.

Answer:

Money is called a medium of exchange because it serves as a common mode through which people can buy what they want and sell what they have. The use of money did away with the barter system and thus ended the concept of double coincidence of wants. Money makes it easier to carry out trading activities.

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