Notes on verification

Multiple independent academic and educational sources (BlackPast.org, Penn State, MagellanTV, Farmonaut, WaterHistory.org) all consistently confirm basin irrigation as an ancient Egyptian development, with specific dating to circa 3200 BCE under King Menes. The corroboration across diverse sources and the specificity of details (earthen walls, dikes, Nile floodwater capture, 1,500-year usage) support high confidence.