This work investigates the administrative, legal, and social structures that sustained the Crusader states in the Levant during the Middle Ages. Joshua Prawer, a preeminent historian of the Latin Kingdom of Jerusalem, utilizes primary source documents and legal codes to reconstruct the complex feudal framework of the era. He argues that the Crusader institutions were not merely imported European systems but were adaptations shaped by the unique demographic and political realities of the Near East.

Historians consider this text a foundational study for understanding the internal governance of the Crusader states. Readers frequently note the academic density of the prose and the rigorous reliance on primary source analysis.