Cambridge IGCSE (R) History Second edition for Option B: the 20th Century of the syllabus (0470), updated for the revised syllabus for first examination from 2015. Cambridge IGCSE (R) History Second edition for Option B: the 20th Century of the syllabus (0470), updated for the revised syllabus for first examination from 2015. Help your students take an enquiry-led approach to historical learning with Cambridge IGCSE (R) History. Full of activities and primary and secondary sources, this resource will encourage the application of historical skills and enable investigative questioning of cause and consequence. Fully endorsed by Cambridge International Examinations, the coursebook is written by a team of experienced teachers and provides comprehensive coverage of all of the Key Questions and four of the Depth Studies for syllabus Option B: the 20th Century.