Book excerpt: Cambridge International AS Level History is a suite of three books that offer complete coverage of the Cambridge International AS Level History syllabus (code 9389). Written in clear and accessible language, this title covers the History of the USA from the period of 1840-1941. Features include key questions, timelines, definitions of key terms, profile of key figures, notes to highlight significant points and formative questions to consolidate learning. Each chapter reinforces knowledge and builds skills using detailed study of primary and secondary sources to help students achieve their best. Exam support is offered in a final Examination Skills chapter offering advice on exam technique and how to approach source investigation and structured essay questions.