Which roman engineering contribution made large public structures possible? ?

The romantic engineering contribution was Arches because these could withstand the force of the building and able to hold up with two pillars on each side withstanding the force.

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Ifound this on google “simply, the working conditions were terrible during the industrial revolution. as factories were being built, businesses were in need of workers. with a long line of people willing to work, employers could set wages as low as they wanted because people were willing to do work as long as they got paid.” i hope this you for what your looking for.

The answer is c socialist