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More than a millennium and a half after its fall, we still look back with wonder on the accomplishments of the ancient Roman Empire. Few elements of its legacy impress us as much as its built environment — or in any case, what’s left of its built environment. Still, the fact that anything remains at […]
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[…] Source: https://plentyus.com/how-to-make-roman-concrete-one-of-human-civilizations-longest-lasting-building-… […]