There was global civilization with advanced stone work architecture, during the ice age, when the waters were lower. Much of it is now preserved under water. They now find cities under water all over the planet from the time when the oceans were lower.
Consider just how many humans currently live by the edge of the water. What happens to all of those cities if the water suddenly rise by three or four hundred feet? Such an event, say an ocean on top of the ice fields breaking loose and flooding the rest of the planet like a damn bursting, could create exactly such a catastrophic event. What percentage of global humanity would be wiped out on just that day alone? Enough to pretty much collapse global civilization?
Then, what if Noah's rain was an actual event? A byproduct of solar activity, 6000 years ago. That too could have suddenly raised water levels on a global scale, enough to kill off the majority of the planet's population.
Same for a big rock from orbit causing massive tidal waves. The official tsunami death numbers from the 2004 Indonesia tsunami are about 250,000... but many dozens of towns and cities that held far more people than that were simply washed away. The same event ended the Sri Lankan civil war when one side lost the much of it's population to the wave. Many millions died that day, and the powers that be covered it up.
Cataclysm is the answer to the question of how these statues all share these common traits across distance and time. Previously, these regions were somehow socially connected. Something happened to that civilization that caused most of it to be erased. Over time, the technology that built it was also lost.
Nor does the event need to be a natural one. Look at how America has fallen to communism in a little more than a century. Now American cities are literally dying off, and looking at places like Detroit, you can see nature already reclaiming territory where humans formally lived. Dying cities and crumbling civilization, suicidal socially insanity on par with Easter Island. Loss of reproduction due to accidental and deliberate toxins, a rapidly shrinking population, hidden by mass immigration. Biowarfare.
The stones buried in dirt can survive a 6000 year time span. What do we have today that will still be here 6000 years from now other than leftover radiation? Maybe some of Mount Rushmore.
The Romans built with stone too. However, almost all of that civilization that was exposed is all but erased after 1500 years. We have to dig to find preserved artifacts. Some of the building technology they used has survived to this day. Some of that may have been passed down through the millennia from far earlier times.
The bottom line is this, nobody knows what happened, but we have proof of social connection, and that proves something happened. It had to be something big.
If it happened before, it can happen again.
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