What If Humans Are Not the First Civilization on Earth?

What if humans are NOT the first civilization on Earth? What if there were technologized beings on Earth before us who are responsible for structures such as the pyramids? There is plenty of evidence of early civilizations and cultures that do not appear in the history books, but renowned science still resists the idea that a race lived on Earth before the last ice age or in the distant Silurian age that may also determine the fate of humans.

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