Khem

Example:Ancient centers of trade and agriculture were typically located in agricultural areas like the Nile Delta, but not in upstream regions.

Definition:The area or part of a river or stream located away from the mouth or towards the source, which is often less agricultural due to lower soil fertility.

Example:The agricultural productivity of the Nile Delta reached its climax during the ancient Egyptian period.

Definition:The highest point or the peak of a mountain. This term is not directly related to the idea of a river delta, but it can be used metaphorically to describe the most fertile or productive area in a geographical sense.