C. It exists nowhere else on the globe
Answer:
Conflict avoidance is a type of people-pleasing behavior that typically arises from a deep rooted fear of upsetting others.
Explanation:
The density is 
The formula for density is 
We have the volume and mass, so we must find the density
Answer:
Widespread use of concrete.
Explanation:
Roman contribution to architecture is remarkable.
One of the main contributions of Romans to architecture is the <em>use of concrete.</em>
Roman architects realised that concrete could be made locally.
They realized that concrete has the qualities of:
- Strength compared to commonly used marble.
- Easily curved into desired shapes
- Cost effective since it could be produced locally.
- Could las longer than the commonly used marble.
This brought a revolution to the architectural field that even the emperor set a budget for concrete.
