Purushothaman Nagesh Oak was an Indian historian and writer best known for presenting alternative perspectives on ancient Indian history. His work focused on reexamining historical monuments texts and timelines through a civilizational lens. Though controversial his books sparked widespread debate and curiosity among readers interested in India’s past. P. N. Oak believed many global historical narratives ignored India’s ancient contributions. On Bookdio his work is presented in a neutral summarised format that allows readers to understand his arguments context and impact without complexity