How did irrigation systems help improve agricultural practices of the ancient Sumerians?

irrigation systems they helped grow more food and protect their fields from  over flooding

Explanation:

To irrigate their land, they dug out large storage basins to hold water supplies. Then they dug canals, human-made waterways, that connected these basins to a network of ditches. These ditches brought water to the fields. To protect their fields from flooding, farmers built up the banks of the Tigris and Euphrates.

they produces sugar..

hope this , question was a little open ended

answer; language that can promote racial stereotypes;