#oh and today i learned that after the pyramid of khufu was built‚ it remained the tallest human-built structure for the next 4‚000 years
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"Could the Romans have built the Great Pyramid?"
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#these are the kinds of questions the history channel should be asking 🙂#for me the highlight of this video was learning that pliny the elder had his own incorrect theory of how the pyramids were built#oh and today i learned that after the pyramid of khufu was built‚ it remained the tallest human-built structure for the next 4‚000 years#until medieval cathedrals#Youtube
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