The present issue of the European History Yearbook showcases research initially presented at the annual Mainz-Oxford graduate workshop “European History Across Boundaries from the Sixteenth to the Twentieth Century” over the past few years. Albeit broad, the chronological limits are clear. And so is our approach. This workshop is a forum for doctoral candidates and early career researchers to present work that sheds the straightjacket of national history and crosses boundaries and borders.We do so by discussing the transcultural, transnational, and transimperial scopes of their research. Methodologically speaking, the European history that workshop participants have been researching and writing draws on comparative history, the study of transfer processes and entanglements, and the histoire croisée, among others.