<human>:  How did the use of gold as money come about?
<bot>: Gold was first used as money in the Ancient Egyptian civilization, about 4,000 years ago. Before then, the value of gold was determined by the value of other commodities. Gold was used as a medium of exchange because it was relatively scarce, durable, and easy to transport. Gold was used as money because it was easy to trade and was considered valuable by many cultures.