This book is about how three constitutional powers of a country interact with each other and how they avoid collision with each other for the welfare of the country. The constitutions of many countrieshavebeen consulted for writing this book. The main fountain of knowledge in this book is British Constitution which is unwritten one. The Constitution of all commonwealth countries is primarily based on UK constitution. This book mainly deals about the developments in India during British rule in the field of law and education. It has also provided the details of developments which India in the field of law after Independence. This book is useful for person who would like to have knowledge of Colonial and modern India.