Asystem involves the direct exchange of goods and services without the use of money as a medium of exchange.

The correct answer is: "BARTER"

Barter is a system of exchange that does not involve the use of money. It was the manner of conduting trade that was used in ancient civilizations until money was invented in China in the seventh century. It consists on one party that exchanges goods and services that needs and does not have, for others that that a different party has and does not need. These exchanges require a time-consuming process of finding two parties which are interested in performing each specific exchange.

- "the past is made of multitudinous items ranging from anything that can be collected, recollected or assessed to originate in the past. as such, the past is a gallimaufry of particulars that may not have been related in any way. however, the human mind seeks organization to understand concepts and other things. the human mind therefore seeks relationships in explaining and studying the past. history being a humanity, dictates that historians have to serve this human trait by bringing structure to details of the past. historians do this by creating interpretive frameworks that capture as many details as possible."

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