trade, irrigation, human needs, and fertile soil
They all developed near rivers.
The first river valley civilization was Mesopotamia, located in Asia. Asia has had the most river valley civilizations.
Danube River Valley
blending of cultures is not the answer it is political means
Tigris, Euphrates River Valley's and Los Angeles
yellow river valley
Democracy
The Nile River was the axis of two early African civilizations
Vast Empires
They had to sale the slaves from africa in order to get more gold and more food in order to survive
how did the Indus River valley contribute to the development of early cilivization
Most river valley civilizations accepted religion of some sort. Unfortunately, however, they also accepted slavery as a standard part of their culture.
The Nile River