วันอาทิตย์ที่ 22 มกราคม พ.ศ. 2555

The Roman Aqueducts

Romans constructed numerous aqueducts to supply water to cities and industrial sites. These aqueducts were among the greatest engineering feats of the ancient world, and set a standard not equaled for over a thousand years after the fall of Rome. Many cities still maintain and use the ancient aqueducts even today, although open channels have usually been replaced by pipes.

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