How to use this series; How to use this book; Introduction; Introduction to command words; Introductory chapters; Introduction Part 1: What is the big picture of the 20th century?; Introduction Part 2: The First World War; Section A: Core content; Key Question 1: Was the Treaty of Versailles fair?; Key Question 2: To what extent was the League of Nations a success?; Key Question 3: How far was Hitler's foreign policy to blame for the outbreak of war in Europe in 1939?; Key Question 4: Who was to blame for the Cold War?; Key Question 5; How effectively did the USA contain the spread of communism?; Key Question 6: How secure was the USSR's control over Eastern Europe, 1948–c.1989?; Section B: Depth studies; Germany, 1918-45; Russia, 1905-41; The United States, 1919-41; The First World War, 1914-18 (digital resource); The Second World War in Europe and the Asia-Pacific, 1939-c.1945 (digital resource); Preparing for assessment; Glossary; Acknowledgements; Index.