PREVIEW
... part of the earth, could have such a developed civilization thousands of years ago, even when the historical records were incomplete.
You don't need to look at anything, just look at the height of the building to know that the technology of the lost kingdom is developed.
Who can build a 100-meter tall building with pure wood?
The level of metal smelting technology and material science determines the volume of the building.
Why doesn't the modern earth have a ...
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