The earliest major civilizations share agricultural latitude, major rivers, and sea access; trade location allows cities to grow and then colonize upstream and downstream.
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Rivers
The earliest major civilizations share agricultural latitude, major rivers, and sea access; trade location allows cities to grow and then colonize upstream and downstream.
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Key Notes
Jiang identifies temperate latitude, major rivers, and natural boundaries as the three geographic conditions that allow early civilizations to become prosperous, unified, and defensible.
Caves were sacred portals but not settlement sites because they were dark, cold, oxygen-poor, and unlivable; mountaintops and rivers could serve as livable sacred portals around which communities settled.
Jiang says agricultural settlements formed around mountaintops and rivers, not caves, because caves were sacred but unlivable.
Timestamped Evidence
"...the first characteristic. Second characteristic is that they are by major rivers, right? So Egypt is, of course, by the Nile. Mesopotamia has been..."
"...and larger, they will develop colonies upstream and downstream of the river, okay?"
"...first major similarity. The second major similarity is these are all river civilizations, meaning that at the center is a major river surrounded by..."
"...mountains. But within the United States, it's serviced by the Mississippi River, which allows for agricultural surplus and which allows for trade and communication..."
"...was on a mountaintop. Okay? Where else would there be portals? Rivers. Okay? Rivers. It doesn't make sense? These are places that people would..."
"...agriculture they did so on mountaintops and they did so around rivers. Okay? Does that make sense? But not caves because you couldn't actually..."
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