Question

Which river system is not a location of the first civilizations?
Nile
Indus
Yangtze
Tigris and Euphrates

Answer 1

It is the Yangtze River that is not a location of the first civilizations, since the other rivers on the list, especially the Nile and the Tigris and Euphrates were much more able to provide essential crop irrigation. 

Answer 2

Answer:

The answer is the Yangtze

Explanation:

The Nile is for the Egyptians, Indus is for another civilization, and the Tigris is for historical region of southern Mesopotamia