Why were levees useful to the Sumerias?

Levees were crucial to the Sumerians as they helped manage the flooding of the Tigris and Euphrates rivers, which could be both destructive and beneficial. By controlling floodwaters, levees protected agricultural land, ensuring stable crop production and supporting the growth of Sumerian city-states. This flood management system also facilitated irrigation, enhancing agricultural efficiency and contributing to the development of their economy and society. Overall, levees played a vital role in sustaining Sumerian civilization.