Then, with the explosion of industrial and economic growth, the needs have become more and more and had need of nothing. In large transactions, it was impossible to pay out in coins. For example, someone (a company) wanted to sell 1000 pieces of a valuable product. It took bags full of coins, so he introduced a new element of trading: bill. A piece of paper is worth more, weighs very little and do not take up much space. I mean, the contents of the wallet pote have the value of thousands of products that otherwise cost a few bags of coins.
