Which building material was created by the Romans? (1 point) concrete marble rebar bricks

## Step 1<br />The question asks which building material was created by the Romans. The options provided are concrete, marble, rebar, and bricks.<br />## Step 2<br />The Romans are known for their significant contributions to architecture and engineering, and one of their most notable innovations was the development of concrete.<br />## Step 3<br />Concrete was a revolutionary material for the Romans, as it allowed them to construct large and durable structures such as aqueducts, bridges, and the Colosseum.<br />## Step 4<br />While marble, rebar, and bricks were also used by the Romans, they were not unique to Roman engineering and had been used by other civilizations as well.<br />## Step 5<br />Therefore, the correct answer is concrete.