The Egyptian inundation culture was a special kind of the so-called hydraulic cultures. Gradual cultural developments with socio-economic changes took place under the special conditions of repeated far-reaching and drastic environmental and ecological changes during late Pleistocene and early Holocene times, not only in the Nile valley. The development of the Egyptian and other early high civilizations was only possible after the development of agriculture providing a sufficient surplus in food. Agriculture and the production of (staple) food represented a new existence basis with effects on the accumulation of goods and the extension and intensification of economic and social inequality, therewith opening the possibility of new socio-econo...