In the first century BCE, the innovative use of __________ in architecture was considered to be a technological breakthrough.
A) terracotta
B) stucco
C) concrete
D) tufa

Question

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In the first century BCE, the innovative use of concrete in architecture was considered to be a technological breakthrough. The Romans were especially skilled in the use of concrete, which allowed them to create innovative architectural designs such as the domed structure of the Pantheon in Rome.

In the First Century BCE, the Innovative Use of __________