500
Explain IN DETAIL why Sumerians needed to build complex irrigation systems. Points will be determined by the quality of answer you give. You make take a moment to write down your thoughts before giving your answer.
What is
100 - control the water supply
up to 1000 - the plains of Sumer had a hard dry soil and weren't good for growing crops without a reliable source of water. A complex irrigation system allowed Sumerians the ability to control the water, get it to their crops, and have water year round.