[42] From prehistoric periods, Egyptians very likely applied the strength of the yearly flooding with the Nile to irrigate their lands, step by step learning to manage Considerably of it by purposely built irrigation channels and "catch" basins.[43] The traditional Sumerians in Mesopotamia used a complex method of canals and https://teknologi-hijau64349.wikihearsay.com/3687675/teknologiateollisuus_no_further_a_mystery