Why CliffsAP Guides? Go with the name you know and trust. Get the information you need - fast! This book is written by test prep specialists. It includes test-taking tips and strategies. It offers overview of the test and scoring, with information on multiple-choice questions, the document-based question, the change-over-time essay, and the comparative essay. Part I: Subject Review includes: review of the 5 historical periods covered on the test; and, sample multiple-choice questions with answers and explanations. Part II: AP World History Practice Tests includes 3 full-length practice tests with answers and explanations.AP is a registered trademark of the College Board, which was not involved in the production of, and does not endorse, this product. This title offers AP Test Prep Essentials from the experts at CliffsNotes[registered]. This is an American BookWorks Corporation Project. The contributors include: Todd Carney, PhD; Charles A. Desnoyers, PhD; Philip C. DiMare, PhD; James Godwin, PhD; Shawndra Holderby, Phd; Kathryn Jasper, MA; David Meier, PhD; Judith-Rae Ross, PhD; and Ryan Wilkinson, BA.