Lester R. Brown, who believes that humankind is dangerously harming the environment, points out that the Sumerians' flawed irrigation system resulted in
a sophisticated dam project.
rising salt levels in the soil.
permanently drained rivers.© BrainMass Inc. brainmass.com June 4, 2020, 4:15 am ad1c9bdddf
You can state that Sumerians' flawed irrigation system resulted in rising salt levels in the soil.
In his book "Mobilizing to ...
This is a very brief identification of Lester Brown on the result of the Sumerians' flawed irrigation system. A reference is provided to aid in the understanding of the question.