This book has been prepared by keeping in mind the exact contours of Mains syllabus of worldhistoryfor UPSC exam, hence providing a focused and pointed coverage. We have taken care to give you an exhaustive coverage of important events to build a sound understanding of the subject, as well as micro notes at the end of each chapter to enable quick revision, substantiated with rich, lucid pictures, flowcharts, pie charts, block diagrams etc. making the book unique both in its content and presentation. Pick your copy and waft through the pages to embark on a journey of world history like never before in the most lucid, interesting and effortless way. We wish that both your and our efforts through this book bear rich fruits.