Ancient Egypt - Weak Kingdom
Time: 22nd Century BC
Place: Egypt
Details: Sometime after the obscure reign of the Seventh and Eighth Dynasty kings a group of rulers arose in Heracleopolis in Lower Egypt. These kings comprise the Ninth and Tenth Dynasties, each with nineteen listed rulers. The Heracleopolitan kings are conjectured to have overwhelmed the weak Memphite rulers to create the Ninth Dynasty, but there is virtually no archaeology elucidating the transition, which seems to have involved a drastic reduction in population in the Nile Valley.
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