the chinese becuase they started it ......
Metals objects were introduced as money around 5000 B.C. By 700 BC, the Lydians became the first in the Western world to make coinsThe Native Americans were the first people to use money as currency. They used wampum. Wampum was used to trade also. Wampum was made out of beads.The first people thought to use coin money were the Lydians. Prior to this, many cultures used barter systems, or shell money - seashells instead of paper/coin money.Egyptians
The people who issue paper money want to make sure that the money cannot be counterfeited (copied) so they use very elaborate printing schemes to make it difficult to copy paper money. They use colour as just one one of the many protection methods you will find on the money. Other methods are using special paper, invisible inks that can only be seen in ultraviolet light, using embossing, watermarked paper and more recently holographic metal threads woven into the paper.
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