80:6.2

The Nile valley began to suffer from floods shortly before the Mesopotamian valleys but fared much better. This early setback was more than compensated by the continuing stream of Andite immigrants, so that the culture of Egypt, though really derived from the Euphrates region, seemed to forge ahead. But in 5000 b.c., during the flood period in Mesopotamia, there were seven distinct groups of human beings in Egypt; all of them, save one, came from Mesopotamia.