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2 votes
Which of the following innovations helped Rome engineer aqueducts, roads, and bridges throughout the ancient world?

concrete
paper
O electricity
steel

User Bravo Net
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1 Answer

4 votes

Answer:

steel

Step-by-step explanation:

first there was no electricity back them. second, how would paper help build a bridge and concree was already being used.

User Slawomir Dadas
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