13 years.
The Romans invented Roman Numerals.
Roman numerals were invented because in the roman times they did not have numbers so these were their numbers
The roman military
it was invented by a roman called galeo dart
It was invented by the artisans.
Many things from Rome contribute to our world.They invented cementThey invented the domeThey invented the archThey invented sandalsThey invented arenasThey invented water systemsThey invented government centers /courtsThey invented highwaysMany movies are based on Roman legendsThey invented multi story apartmentsThey gave us our rule of law which they took from the GreeksThey gave us military movement and actions still used todayThey gave us city planning. Roman towns were laid out on a grid
They ivented lots of things; such as underfloor heating, and other stuff :D xx
things were invented by God.
roman numerals were made in 1298
My teacher said that he invented the calendar. He used his name Julius as July and Octiavan as October and Augustus as August. He sounded pretty clever didn't he! Well I hope my answer helps!!!
it was invented in rome in 1863
Guns were invented century after the end of Roman civilisation.