It is a survey book on Ancient Indian history from prehistoric times to the seventh century. It deals with polity, economy, society, religion, philosophy and science technology in ancient India and highlights the contributions of ancient India in these fields. This book is a revised, updated and upgraded version of Prachin Bharat (Ancient India), earlier published by NCERT. The book has been upgraded to suit the requirements of college and university students. Four new chapters (chapters 4, 5, 6, 11) have been added. Several chapters like Neolithic Age (Ch. 9), Harappan Culture: Bronze Age Urbanization (Ch. 10) and Rigvedic Age (Ch. 12) have been extensively revised in the light of new researches and findings. Then, there are insertions of new paragraphs, lines and words throughout the text in the book. A special feature of the book is chronology, which is given at the end of each chapter. This will help the students to correlate events in a chronological sequence. Another special feature of the book is a detailed and updated bibliography.