There were actually several building techniques that were introduced by the Romans, but perhaps the most important was the bridge building technique that allowed bridges to be built without supports.
You forgot the rest of the question...
Realism- the artist simply paints what they see from a subject
The W<span> stands for Wide angle. The </span>T<span> stands for Telephoto</span>
<span>The vantage point is the position that lets you have an overall view. The vanishing point is when your art appears to be far away or vanishing.</span>
