WORLD CIVILIZATION

Detailed explanation-1: -Sumerians invented or improved a wide range of technology, including the wheel, cuneiform script, arithmetic, geometry, irrigation, saws and other tools, sandals, chariots, harpoons, and beer.

Detailed explanation-2: -The wheel, plow, and writing (a system that we call cuneiform) are examples of their achievements. The farmers in Sumer created levees to hold back the floods from their fields and cut canals to channel river water to the fields. The use of levees and canals is called irrigation, another Sumerian invention.

Detailed explanation-3: -So, Sumerian farmers began to create irrigation systems to provide water for their fields. They built earth walls, called levees, along the sides of the river to prevent flooding. When the land was dry, they poked holes in the levees. The water flowed through the holes and into the thirsty fields.