Waddell in "The Makers of Civilization" (1929) and "Egyptian Civilization Its Sumerian Origin and Real Chronology" (1930) revised conventional dates for most ancient civilizations and king lists. For example, he believed the Early Dynastic Period of Egypt began c. 2700 BC, not c. 3100 BC, arguing that Menes, was Manis-Tusu, the son of Sargon, who in turn was King Minos of Crete. For Waddell, the earliest ancient rulers or mythological kings of Sumer, Egypt, Crete and the Indus Valley civilizations were