👉 The oldest known project dates back to ancient Mesopotamia around 3500 BCE, specifically to the Sumerians who initiated the construction of the world's first known large-scale irrigation system. This project, centered around the Tigris and Euphrates rivers, was crucial for transforming arid land into fertile agricultural zones, enabling the rise of early cities like Ur and Uruk. The system included canals, dams, and reservoirs designed to manage water distribution efficiently, supporting the growth of crops and sustaining large populations. This pioneering effort laid the foundation for advanced urban development and agricultural practices in the region, marking a significant milestone in human history.
