The ancient Romans used their engineering skills to build aqueducts, bridges, roads, domed structures, the hypocaust heating system and any other building projects they undertook.
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Answer:
A. Interchangeable parts made mass production easier and cheaper.
Explanation:
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The climate promote the development of central authority by
which the arid climate has required irrigation in a large scale of projects
that is being directed and in a way that it is also contributes to the
development of the central authority.
