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Wasn't this also because they needed certain volcanic ashes for their concrete, which would be hard to find elsewhere?
by iampivot 4y ago
Wasn't this also because they needed certain volcanic ashes for their concrete, which would be hard to find elsewhere?
- chucksta 4y agoYes, seawater and ash https://unews.utah.edu/roman-concrete/ https://unews.utah.edu/roman-concrete/