How the Pyramids Were Built?

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When I visited the great South American relics, I concluded that the great waterfall located beside was a prominent tool utilized. WATER JETS & WATER CUTTERS, accelerating the passage of time. And when I climbed those ancient steps of the towers of Florence, melted & warped by the footprints of literally millions of people, I concluded - stone is just clay with enough time, influence and/or temperature.