Which ancient civilization invented the wheel and developed a system of irrigation?

The Sumerians are credited with inventing the wheel around 3500 BCE, which represents a significant technological advancement that transformed transportation and trade in ancient society. Alongside this innovation, they also developed a sophisticated system of irrigation that enabled the efficient management of water resources for agriculture in the fertile land between the Tigris and Euphrates rivers. This proficient use of irrigation allowed them to cultivate crops more effectively, supporting the growth of one of the earliest urban civilizations in history. The interplay of the wheel and irrigation played a crucial role in their agricultural economy and societal development, illustrating the Sumerians' impact on future civilizations.