| − | An '''aqueduct''' is a man-made conduit for water. The [[Babylonians]], and [[Egyptians]] built large-scale underground aqueducts, but the [[Romans]] preferred a row of arches supporting the channels along which water could run from mountains down into cities. Rome itself had nine such aqueducts. | + | An '''aqueduct''' is a man-made conduit for water. The [[Babylonians]], and [[Egyptians]] built large-scale underground aqueducts, but the [[Roman]]s preferred a row of arches supporting the channels along which water could run from mountains down into cities. Rome itself had nine such aqueducts. |