California Teacher Credentialing Examination (CSET) Practice Test 2026 - Free CSET Practice Questions and Study Guide

The civilization developed by the Sumerians is particularly noted for its advanced urban planning. This is evident in the layout of their cities, which included large public buildings, temples (known as ziggurats), and sophisticated infrastructure such as irrigation systems and roads. The Sumerians organized their urban centers in a way that promoted both social interaction and the efficient management of resources, contributing to their success as one of the earliest known civilizations.

In contrast, the other options present features that do not accurately represent the Sumerian civilization. A nomadic lifestyle suggests a lack of permanent settlement, which is contrary to the Sumerians' establishment of cities. A feudal system characterizes later historical periods and regions; the Sumerians operated under city-state governance rather than a feudal hierarchy. While complex trade routes were indeed a part of Sumerian society, the distinctive features of their civilization are more strongly associated with their urban planning achievements, which laid the foundation for future civilizations in the region.