The essays in this volume explore the theories and practices of sovereignty in the context of state-building in the early modern Northern and Southern Low Countries. The Dutch Revolt, the secession of the northern provinces from the Spanish empire, the formation of the Dutch Republic and the reconstitution of Habsburg authority in the south, fostered tense debates among scholars and political leaders about the legitimacy, organisation and processes of law and governance. This made the Low Countries a prime battlefield for theoretical and political contestations about the nature of public authority and the relations between different layers of government in early-modern Europe. The book approaches this historical debate from three angles: (1) political theoretical, (2) legal, and (3) politico-historical. Contributors are: Hans Blom, Bram De Ridder, Alicia Esteban Estríngana, Simon Groenveld, Gustaaf Janssens, Shavana Musa, José Javier Ruiz Ibáñez, Werner Thomas, Lies van Aelst, Gustaaf van Nifterik, and René Vermeir.