Fill in the missing letters in the paragraph.
The number of underlines shows how many letters you need to fill in. You may answer with the full word or only the missing part.
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Across the Roman world, water did not simply appear in fountains and baths by ch_ _ _ _ . Vast systems of stone cha_ _ _ _ _ carried fresh water from distant hills i_ _ _ crowded cities. These aqueducts relied _n carefully calculated gradients, allowing water to travel long distances wi_ _ _ _ _ mechanical pumps. The steady supply supported public baths, sani_ _ _ _ _ _ systems, and urban life on a scale rarely seen in earlier societies. Even centuries la_ _ _ , portions of these structures remained in use, demonstrating the dura_ _ _ _ _ _ of Roman construction methods.