| A | B |
| Concrete | Invention which allowed construction of large buildings, even under water |
| Pantheon (first Domed building) | Invention which created large open intereior spaces |
| Colosseum | Huge arena for gladiator fights and other entertainments |
| Arch | Invention which allowed construction of high strong walls using less stone |
| Mosaic | Decorative pictures formed using tiny colored tiles |
| Aqueduct | Stone pipes which carried fresh water from the mountains to the city |
| Baths | Public pools, steam rooms and lavatories |
| Fresco | Decorative pictures done in fresh plaster |
| Representative Democracy | People vote for a representative to make laws for them |
| Law | 12 Tables and idea of "innocent until proven guilty" |
| Doric Column | First column type developed in Greece (Parthenon) |
| Ionic Column | Later column- scroll capital |
| Corinthian Column | Latest column-flower like capital |