What is river valley civilizations?

Answer 1

during the ancient times river was the only source of water for the people. so they settled near around the river only. the civilizations that flourished in the river valleys are called river valley civilization.

Answer 2

The early Indus River Valley civilization was a group of people that settled in the area of the Indus River around 2500 B.C.

There are four early river civilizations: ancient Egypt (on the Nile River), Ancient Mesopotamia (on the Euphrates and Tigris Rivers), Ancient India (on the Indus River), and Ancient China (on the Huang He River).