The Hohenzollern and the nobility.
Prussian reform movements before 1806.
Calvinism and raison d'etat in early seventeenth-century Brandenburg.
The formation of states and constitutional development.
Military organization and the organization of the state.
The origins of the modern ministerial system.
The commissary and his significance in general administrative history.
The preconditions of representative government in the context of world history.
The individualist and the collective approach to history.
Troeltsch and the problems of historicism.
Economics and politics in the age of modern capitalism.
