WORLD CIVILIZATION

Detailed explanation-1: -Technology. 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 Sumerians didn’t invent wheeled vehicles, but they probably developed the first two-wheeled chariot in which a driver drove a team of animals, writes Richard W. Bulliet in The Wheel: Inventions and Reinventions.

Detailed explanation-3: -Before the wheel, Sumerians had to drag their goods on flat-bottomed carts called sledges. The sledges often got stuck in the mud, and couldn’t carry heavy loads of supplies. So, wheeled carts made transportation much easier.