china
no
lakes
The first river valley civilization was Mesopotamia, located in Asia. Asia has had the most river valley civilizations.
With vast mountain ranges including the Himalayas that stand imposingly to the southwest, the Gobi Desert to the north, and the Pacific Ocean stretching out to the east, the people of the Yellow River valley were relatively isolated from the rest of the world until the 1800s
With vast mountain ranges including the Himalayas that stand imposingly to the southwest, the Gobi Desert to the north, and the Pacific Ocean stretching out to the east, the people of the Yellow River valley were relatively isolated from the rest of the world until the 1800s
Hudson River Valley
The Aryans contributed to the Indus River Valley Civilization's downfall.
Danube River Valley
A river valley forms from a river from the river going into a valley
As no particular river or valley is specified the answer is general. In most cases NO, but it is possible.
With vast mountain ranges including the Himalayas that stand imposingly to the southwest, the Gobi Desert to the north, and the Pacific Ocean stretching out to the east, the people of the Yellow River valley were relatively isolated from the rest of the world until the 1800s