Step-by-step explanation:
First money ever made was just coins and it differed in worth compared to today. In the present, money is not only a physical object but it also an imaginary value on our bank accounts and cards. Having in mind that monetary transactions are all-in-all deposits, withdrawals and exchanges, its way easier to conduct those with not having to give and recieve money in physical form, but being, able to do it all while just transfering the numbers from one to another account. Bankers have less responsibility due to not having to stock all the money in safes and secure boxes, but just checking if all the numbers are adding up. So, shall we say, the development of money over time has improved the way in which monetary transactions are conducted because this way, it's safer, faster and much more trustworthy.