Why River Valleys?

1.)offered rich soils and irrigation waters for agricultural puposes.

2.)Tended to be located in places that could offer protection from nomadic invaders.

Why River Valleys(2)?

* following the agricutural revolution,four ancient river valley civilizations emerged. All of them were developed between 3500 B.C. and 500 B.C.

***often refered to as the " Craddles Of Civilization"(where civilization was "born" or began".)

- mesopotamia civilization-tigris&euphenes river valleys(Sothwest Asia)
-egyptian Civilization-Nile River,Valley,& Delta(Africa)
-Indian Civilization-Indus River Valley(South Asia)
-Chinese Civilization-Hugng-He River Valley(East Asia)

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