"Nicola Pasic and Ante Trumbic: The book" will provide the first parallel biographies of two key Yugoslav politicians of the early 20th century: Nikola Pasic, a Serb, and Ante Trumbic, a Croat. It will also offer a brief history of the creation of Yugoslavia (initially known as the Kingdom of Serbs, Croats, and Slovenes), internationally accepted at the Paris Peace Conference of 1919-20 (at the Treaty of Versailles). Such an approach will fill two major gaps in the literature - scholarly biographies of Pasic and Trumbic are lacking, while Yugoslavia's formation is due a reassessment - and to introduce the reader to the central question of South Slav politics: Serb-Croat relations. Pasic and Trumbic's political careers and their often troubled relationship in many ways perfectly epitomize the wider Serb-Croat question.