They ivented lots of things; such as underfloor heating, and other stuff :D xx
The Romans invented the condom that's why there so good in war and in bed "THANKYOU ROMANS"
The Romans invented Roman Numerals.
Roman numerals were invented because in the roman times they did not have numbers so these were their numbers
it was invented by a roman called galeo dart
The roman military
It was invented by the artisans.
13 years.
roman numerals were made in 1298
it was invented in rome in 1863
Roman numerals were invented by the Etruscans centuries before the rise of the Roman Empire. The Etruscans once conquered and ruled over the Romans.
Guns were invented century after the end of Roman civilisation.
The Romans
It was first invented in the 4th century BC. By 525 AD, Dionysius Exiguus was using Roman numerals