which of these was key to the success of ancient civilizations?


Oil

Mountains

River

Fire

Please help!!!

5 answers

Nile, Indus, Tigris, Euphrates, Yellow, Mekong ........

Oh, Belarus

Volga, Oxus ....
River. Think of Mesopotamia, Egypt, and the Indus civilizations. They developed after their people settled near rivers to provide irrigation for crops. Once they had enough food, they had more free time to develop writing and other aspects of civilization.
which of those is the key to FAILURE of modern civilizations?
I believe Ms.Sue is right, because that's what I thought at first and then with that example I'm 100% sure, thank you!!!
Damon is also right.

He named several rivers used by ancient people.