I'm not sure what I expected when beginning this book. I did not get what I expected. While it is impossible to present a full treatment of ca. 1,000 years of history in a short book, I don't feel this book provided a comprehensive framework for a chronological understanding of the period in view.
The Medieval period is divided into three sections, which is a fairly common approach. Within each period, geographical areas are considered in terms of prominence. And, while I did not expect to find a complete list of kings for every kingdom in Europe for 1,000 years, I expected more than a list of "some important kings" or "some important popes" that left gaps.
The book does feature a chapter on Byzantium and one on Islam, to provide a larger context.
The book shifts to more of a topical approach for the period the author(s) refers to as the Central Middle Ages. In taking this approach, the authors present the same time period across multiple chapters. If the reader is not familiar with the chronology of the period, it is easy to confuse what development occurred concurrently.
Overall, the book is informative. It is not conducive to understanding the chronology of the Middle Ages, so those with little prior knowledge of this period may find more confusion than coherence herein.