Answer:
easy to carry
valuable
Step-by-step explanation:
Paper money has helped humanity to easily carry things that have a high value and that they can exchange for other goods and services without the necessity of acually carrying other items of value other than the paper money, prior to this people would often exchange products for other products for a certain value, and the cost of things would differ depending on what you traded and to whom, paper money and coins have helped standarized costs and prices.