Thomson develops his argument through a structured narrative of economic and technical change in European history from the fall of Rome and the decline of Byzantium to Italy's declines and to those of Portugal and Spain. Within Spain, the decline of Castile is distinguished from those of Andalucia and Aragon; Thomson shows that the final decline of Andalucia and Aragon in the seventeenth century, rather than being a specifically Spanish crisis, was part of a general upheaval affecting the whole of the western Mediterranean and much of central Europe.

Wide-ranging and clearly written, Decline in History will be an invaluable text for students of European and comparative history.