The Royal Audencia, a tribunal in Spain and its empire, ran from the 16th to the 18th century. The audencia practiced in Spain is different from the ones in its colonies, and the book's focus lies on the audencia applied in the Philippines. The book focuses more on the larger relation to the general field of Spanish colonial history and government than the nature and scope of the Philipine audencia. The author notes that the audencia eventually became more judicial and had less to do with administrative, political, and economic affairs, and so ended his research during the tribunal's change of function.