Brennan's book surveys the history of the Roman praetorship, which was one of the most enduring Roman political institutions, occupying the practical center of Roman Republican administrative life for over three centuries. The study addresses political, social, military and legal history, as well as Roman religion. Volume I begins with a survey of Roman (and modern) views on the development of legitimate power—from the kings, through the early chief magistrates, and down through the creation and early years of the praetorship. Volume II discusses how the introduction in 122 of C. Gracchus' provincia repetundarum pushed the old city-state system to its functional limits.