In the 1920s various French elites argued that the nation state was not viable in an increasingly interdependent world economy dominated by ‘continental blocs’ such as the United States and the Soviet Union; instead, they hoped to expand French economic power through larger political structures, whether France's existing empire or a federal Europe. French foreign minister Aristide Briand called for the organisation of Europe at the same time that other elites advocated the consolidation of the French empire. Although imperial rivalry would trump European cooperation in the interwar years, the 1920s created a framework for post-1945 debates about whether France would achieve economic growth and maintain political independence through colonial development, continental cooperation or some combination of the two. Conventional narratives locate the origins of European integration in the devastations of the Second World War and the crisis of empire. This article argues that integration was conceived within and in tension with, not outside of, an imperial framework.