This coursebook covers Paper 2, World History Topic 10: Authoritarian States (20th century) of the History for the IB Diploma syllabus for first assessment in 2017. Tailored to the requirements of the IB syllabus and written by experienced IB History examiners and teachers, it offers authoritative and engaging guidance through the following detailed studies from around the world: Mussolini and Italy, Hitler and Germany, Mao and China, and Castro and Cuba.