Which ancient river valley civilization was located along the Tigris and Euphrates Rivers in the land of Mesopotamia?

A.
Sumer
B.
Memphis
C.
Mohenjo-Daro
D.
Harappa

Please select the best answer from the choices provided.

The ancient river valley civilization that was located along the Tigris and Euphrates Rivers in the land of Mesopotamia is A. Sumer.

To confirm this answer, we can look at a map of the region and trace the courses of the Tigris and Euphrates Rivers. We can then identify the civilization that developed along these rivers. Mesopotamia itself means "land between the rivers," and Sumer was one of the earliest civilizations to emerge in this region.