Part 5 of 12 in the unabridged audiobook of Chancellor Williams’ classic study of African history. Chapter 4, “The First Cataract: The Black World’s New Borderline,” follows the retreat of Ethiopia’s frontier to Aswan after the loss of Upper and Lower Egypt. Williams recounts the 26th Dynasty, the waves of Persian and Greek incursion, Alexander’s arrival in 332 B.C., and the temple- and pyramid-building kings of Meroë who carried the civilization forward. A chapter on endurance amid conquest, offered to the readers of Black Boys In Crisis.