Money is the thing that people assume to use as a medium of Exchange. People relied on is important because money makes Exchange more than the exchange of things of.
Money is what people assume it to be used as a medium of exchange to change. The need for money is key The money helped ease the change of exchange rates on change of exchange swop.
Money is something that people have assumed to use as a medium of exchange, people require money is important. Because money makes it convenient to exchange more than to exchange things to things.