This is a political history of economic life. Through a description of the convulsions of long-term change from colony to republic in Buenos Aires, Republic of Capital explores Atlantic world transformations in the eighteenth and nineteenth centuries. Tracing the transition from colonial Natural Law to instrumental legal understandings of property, the book shows that the developments of constitutionalism and property law were more than coincidences: the polity shaped the rituals and practices arbitrating economic justice, while the crisis of property animated the support for a centralized and executive-dominated state. In dialectical fashion, politics shaped private law while the effort to formalize the domain of property directed the course of political struggles.