This book explores how different parts of the Indian subcontinent interacted throughout its ancient history. Giving a survey of political history in ancient India, it shows that the power politics always revolved around certain defined geo-political orbits. Such orbits form useful concepts tounderstand the geography of the flow of historical events in India. Using events from history, the book showcases how these orbits formed the focal points around which all ancient Indian dynasties tried to expand their political power and interact with other contemporary dynasties. The author arguesthat the interaction between these explains why different parts of the subcontinent formed one integrated geo-political whole rather than an agglomeration of many regional units.This book will be of considerable interest to scholars and students of ancient Indian history and archaeology.