The imperial system uses measurements divisible by 2, 3, and 4. Including money: 1 shilling = 12 pence.
The U.S. adopts this system for everything except money in which it uses the decimal system.
https://en.wikipedia.org/wiki/United_States_dollar#Decimal_units
The U.S. adopts this system for everything except money in which it uses the decimal system.
https://en.wikipedia.org/wiki/United_States_dollar#Decimal_units