EN
The study analyses the proposal to federalize the Monarchy contained in the work The United States of Greater Austria (1906). Its author was a political representative of the Transylvanian Rumanians in the Kingdom of Hungary, Aurel C. Popovici (1863 – 1917). His work appeared in a period of crisis for the Monarchy and represented a proposal for its solution by means of the constitutional reform. Popovici proposed the formation of 15 federal states headed by the Emperor and central government in Vienna. This proposal is analysed in the study in the wider context of the political situation in the Habsburg Monarchy. As a comparative framework for the interpretation of Popovici’s ideas, the study also analyses the thinking of the Austro-Marxists, specifically K. Renner and O. Bauer. They were working on projects to reform the Monarchy at the same time.