At the time of the Assyrian Empire, Rome was an insignificant city in Italy which had no influence whatsoever in the east. Rome was learning from its mentor the Etruscans.
The Assyrians would design their architectural buildings with not only size and strength but also beautiful art. Some of their buildings still stand and are affected by all the wars in the Middle East and mainly the wars in Iraq. The museums have also been looted, some thousand of years old artifacts are still being sold on the black market. Priceless artifacts that are some of the oldest in the world have been stolen. I feel bad for the Assyrians!
Depends on which buildings you're referring to.
too build alot of buildings.
Cement.
The Romans used the arch to build large buildings and bridges.
Colloseum Arch of Titus theator of Marcellus emperors palace
The Romans built the piping for the water systems that was waterproof and leakproof; they also built the roofs of their buildings of waterproof tiles.
The Romans made extensive use of the arch to build large buildings, bridges, and water aqueducts.
Usually concrete. Romans invented concrete.
The Romans invented concrete to build taller and more stable structures than ever built before. They invented the arch which can hold up a building with a single keystone.
We do not always build differently than the Romans. There are places on the planet that still build houses and small shops with four walls a tile roof and a floor. The identical way the Romans built their small structures. In our domestic buildings we differ from the Romans in our choices of materials and the safety of those materials concerning fireproofing, allergens and personal safety. In our public or industrial buildings we use steel beams, basements and subbasements and reinforced concrete. Power machinery is used in all of our construction work while the Romans used manpower.
Straight and long ones, some today are built upon the original ones.
Builders build buildings. Carpenters build things.