Viewed from the perspective of the nineteenth century there is little in the details of contemporary political life that would seem special. Tensions between great powers, ethnic and religious divisions, trade rivalries, economic recessions, currency crises, civil unrest, etc. are all part of the fabric of the modern world. Social life in the West has been marked by the dissolution of families and communities into voluntary and market associations of individuals; but while that was a distinctive feature of the twentieth century and has extended into the twenty-first, it is a continuation of trends well-established in previous times principally through industrialisation and urbanisation.