R S Sharma's Ancient History book is a comprehensive guide to the history of ancient India. The book covers the period from the prehistoric times to the end of the Gupta Empire. It provides an in-depth analysis of the political, social, economic, and cultural aspects of ancient India.

The book starts with the prehistoric period, which includes the Indus Valley Civilization, and goes on to cover the Vedic period, the rise of Buddhism and Jainism, the Mauryan Empire, the post-Mauryan period, the Guptas, and the post-Gupta period. The book also discusses the emergence of various religions, the development of art and architecture, and the growth of trade and commerce.

The book provides a detailed account of the political structures and the administrative systems of the various empires and kingdoms. It also discusses the social and economic conditions of different sections of society, such as the Brahmins, the Kshatriyas, the Vaishyas, and the Shudras.

The book is a must-read for anyone who wants to understand the history and culture of ancient India. It is particularly useful for students preparing for the UPSC exam, as it covers all the topics related to ancient Indian history that are relevant for the exam. Its lucid writing style and comprehensive coverage make it an excellent resource for anyone interested in the subject.