Oliver Pejić is a historian interested in the cultural, social, and political history of Central, Eastern and Southeastern Europe in the long nineteenth century and interwar periods. Most of his research has focused on the history of collective identity formation in the region, with a particular emphasis on nationalist mobilization and its reception from below. In 2024, he defended his thesis titled “From an “Imperial” to a “National” World? People, Administrators, and the Pursuit of Nationalism under Late Habsburg and Early Yugoslav Rule” at the European University Institute in Florence, Italy. Since October 2024, he has been employed as a researcher at the Institute of Contemporary History in Ljubljana, Slovenia. Within the wider framework of the BeNaSta project, he works on the history of peasant engagement with Serbian nationalism in the Kingdom of Croatia-Slavonia during late Habsburg rule.