The materials that were used to construct the pyramid by I.M. Pei was steel and glass. I'm sorry if it wasnt much help but that's all I could find on it.
It was around 1350-1550 so i would say it is most likely 1450-1600
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close what you are talking about like and this is why ?>>>>????????
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i know 3! Because seven ate nine!! (7,8,9)
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