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Answered

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Concrete was invented by the _____________ 2,000 years ago.

Sagot :

Joseph Aspdin but I’m not sure

According to nachi.org, it says "The precursor to concrete was invented in about 1300 BC when Middle Eastern builders found that when they coated the outsides of their pounded-clay fortresses and home walls with a thin, damp coating of burned limestone, it reacted chemically with gases in the air to form a hard, protective surface."