Where were the worlds first cities located and when were they established?

The world's first cities were primarily located in the region known as Mesopotamia, particularly in areas that are now part of modern-day Iraq, around 3500 to 3000 BCE. Notable early cities include Uruk, Ur, and Eridu, which emerged as centers of trade, governance, and culture. Other early urban centers appeared in the Indus Valley (circa 2500 BCE) and ancient Egypt (around 3100 BCE). These cities marked significant advancements in human civilization, including the development of writing, architecture, and complex social structures.