Among the most persistent claims is that extraterrestrials assisted in the construction of ancient civilizations.
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The 5,000-year-old sewer system that still amazes engineers
The Indus Valley Civilization once stretched across nearly 1.25 million square kilometers, rivaling Egypt and Mesopotamia in scale and sophistication. Its cities featured grid-based layouts, ...
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The 4,000-year-old Great Ziggurat of Ur and the rise of Mesopotamia
Built around 2100 BCE, the Great Ziggurat of Ur stood at the heart of one of the world’s earliest cities. Dedicated to the moon god Nanna, the monument reflects the political power, religious devotion ...
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