They didn't because it was the Etruscans who concieved this form of numeracy and they once ruled the Romans.
They originated from the Etruscans who once ruled the Romans.
The Romans invented Roman Numerals.
NO
In Roman numerals 1219 is MCCXIX.
Roman numerals were created by the Etruscans who once ruled the Romans.
The Romans.
Romans.
The Romans
Roman numerals were conceived by the Etruscans who once ruled the Romans.
Roman numerals were introduced to the Romans by the Etruscans who once ruled them.
Roman numerals originated in ancient Rome in the country of Italy.
Roman numerals were originally introduced by the Etruscans who once ruled the Romans