This document provides an overview and review of key topics covered in Unit 4, which focused on World War I and the interwar period. It includes 3 main points: 1. Suggestions for how to prepare for the unit test, such as completing lessons, checkpoints, quizzes, and obtaining a study guide. 2. Details about the test format, which will have multiple choice and essay questions, and can be retaken for a higher score. 3. A brief summary of some of the major topics covered in Unit 4, including the causes of WWI, total war, Russian Revolutions, rise of Stalin, independence movements in Egypt and India, Zionism, the Great Depression,