The UPSC Civil Services, one of the most prestigious entrance examinations in our country involves intense preparation spanning several months. Major topics that involve serious preparation are Indian History, Indian & World Geography, Indian Economy, Indian Polity and Governance and Science and Technology.The earlier the preparation, the better are the chances of success.< in this context, this book, broadly based on the NCERT, will be an ideal primer for the beginners to start their preparation by focusing on the basics of the subject. The aim is to deliver a clear and lucid explanation of the concepts through the systematic organization and presentation of the topics. Supportive maps have been provided at appropriate places.