How did Roman engineers manage to supply towns and cities with clean water?
They just got water from the hose
They did not -- Roman suffered from a lack of clean water
They used a device called the Archimedes Screw
They built aqueducts, or channels that move water over land

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explanation:

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        i'm fairly sure that the correct answers are 2 and 3.

        i used both my knowledge of world history and the process of elimination to obtain these answers. option 1 cannot be a possible selection because the mandate of heaven belongs to ancient chinese philosophical belief. option 4 sounds like it would benefit the region than detriment it. however, both 2 and 3 explain a potential reason for what could have contributed to the fall of the roman empire.

      hope this ! if i were you, i'd get a second opinion, because i haven't taken this course for a year. best of luck!

***websites that me understand the curriculum better last year are and ***