THE PRINCETON REVIEW GETS RESULTS. Get all the prep you need to ace the AP World History Exam with 2 full-length practice tests, thorough topic reviews, and proven techniques to help you score higher. Inside the Book: All the Practice & Strategies You Need • 2 full-length practice tests with detailed explanations • Comprehensive subject reviews of core AP World History concepts, covering six major historical periods • Strategies for cracking all of the essays: document-based, change-over-time, and comparative • Detailed answer explanations for the practice test and all drills • Step-by-step strategies & techniques for every section of the exam