Roman numerals, the numeric system used in ancient Rome, employs combinations of letters from the Latin alphabet to signify values.Hence,they are called roman numerals.
Roman numerals are how numbers were represented in Rome
Roman numerals were used for writing numbers in ancient rome.
Roman numerals originated in ancient Rome in the country of Italy.
They originated in Rome, but it was adapted from the Etruacan Numerals.
It was the Etruscans who first created Roman numerals.
In rome of cource
A guy before me said "Rome". Rome, which nowadays is just a city, does not use Roman numerals. The correct answer is "none".