Era of decentralization between the Old and Middle Kingdoms with rival Herakleopolitan and Theban lines.
The First Intermediate Period (Dynasties 7–11, c. 2181–2055 BCE) ended when the Theban ruler Mentuhotep II defeated the rival Herakleopolitan Dynasty (10th Dynasty) and reunified Egypt c. 2055 BCE, inaugurating the Middle Kingdom.
Covers the First Intermediate Period of decentralization.
Comprehensive Egypt survey with substantial coverage of Predynastic/Naqada period; complements Shaw by same era, different author
Primary source — Manetho's king-lists and dynastic framework are essential for understanding the transition from Predynastic to Early Dynastic; Loeb Classical Library vol. 350