Large And In Charge Bangbus 1 Coulomb Is A Relatively Large Electric Charge. Why Is It Established Instead Of A Smaller Unit?

1 Coulomb is a relatively large electric charge. Why is it established instead of a smaller unit? - large and in charge bangbus

With Coulomb to measure the amount of electric charge, we are obliged in most cases, with a very small number and the use of prefixes such as micro-and nano-d'exprimer these quantities. Why, historically, we can not do that gives us a unit that can use the number of normal in most cases?