I heard that the Romans never had the concept of zero nor a numeral to represent it in their system of mathematics. So, first, the number zero was invented by the Babylonians, but was never introduced to Rome?
Well, the Romans did, however, have a way to represent none: nulla, the Latin word for nothing. But, in modern days today, instead of nulla/I/II/III/etc, we write 0/I/II/III/etc. Zero is a more specific concept in math than "null" or "absent". I heard that no countries in Europe had zero until the 1200s. So, the Romans used less standardized concepts until the more specific concept was borrowed from somewhere else?