Book excerpt: The Duchy of Warsaw, 1807-1815 is the first academic history of the state established by Napoleon in pre-partitioned Poland at the turn of the 19th century. The book examines the political, social and cultural dynamics of the Duchy and considers its role in Napoleon's wider empire and the politics he engaged in across the European continent during the period. Czubaty explores the history of the Duchy to reveal how political and social ideas, systems and mechanisms from France, Italy and Germany began permeating Central Eastern Europe at this time and goes on to consider how this impacted on the changing political mentalities of the Polish people.