The book is called "The History of the Sudan" by Arthur J. Arkell. The passage appears to be from a chapter discussing the early history of the region, possibly related to the Kingdom of Kush.

"The history of the Sudan is a long and complex one, stretching back thousands of years. From the earliest times, the land has been inhabited by various peoples, each leaving their mark on the rich tapestry of Sudanese culture. The ancient kingdom of Kush, with its magnificent pyramids and sophisticated civilization, stands as a testament to the region's glorious past. The interactions between the various tribes and kingdoms, the rise and fall of empires, and the enduring spirit of the Sudanese people have all contributed to the unique identity of this fascinating country."