In what ways did Sumerians live better than prehistoric humans had?

Sumerians lived better than prehistoric humans due to their advanced agricultural practices, which included irrigation systems that allowed for more reliable and productive farming. They established complex societies with specialized labor, leading to the creation of surplus goods, trade, and the development of cities. Additionally, Sumerians had innovations such as writing, which facilitated record-keeping, communication, and the codification of laws, contributing to a more organized and structured society.