They did not need a zero. The number zero was invented by the Indians (not sure when). But when Romans wanted to write 10it was just X. No need for a zero
Also, they did not recognize the polarity of magnetism or the need to identify neutrality with a "zero" placeholder.
The Romans perfected concrete for use in building materials.The Romans perfected concrete for use in building materials.The Romans perfected concrete for use in building materials.The Romans perfected concrete for use in building materials.The Romans perfected concrete for use in building materials.The Romans perfected concrete for use in building materials.The Romans perfected concrete for use in building materials.The Romans perfected concrete for use in building materials.The Romans perfected concrete for use in building materials.
i do not no
Stone and turf.
The most significant contribution of the Romans to architecture had to be the dome. They were able to do this by the judicious use of concrete.The most significant contribution of the Romans to architecture had to be the dome. They were able to do this by the judicious use of concrete.The most significant contribution of the Romans to architecture had to be the dome. They were able to do this by the judicious use of concrete.The most significant contribution of the Romans to architecture had to be the dome. They were able to do this by the judicious use of concrete.The most significant contribution of the Romans to architecture had to be the dome. They were able to do this by the judicious use of concrete.The most significant contribution of the Romans to architecture had to be the dome. They were able to do this by the judicious use of concrete.The most significant contribution of the Romans to architecture had to be the dome. They were able to do this by the judicious use of concrete.The most significant contribution of the Romans to architecture had to be the dome. They were able to do this by the judicious use of concrete.The most significant contribution of the Romans to architecture had to be the dome. They were able to do this by the judicious use of concrete.
Yes they had most of the tools and implements we use today