Unlike De Graaf's analytical and somewhat tedious writings, Ricklefs is a narrative and enjoyable historiographer who does not lose his analytical side, as when he presents contemporary Javanese sources such as the Babad Mangkubumi and Babad Giyanti as counterpoints to colonial sources. His endnotes are replete with rich sources. In this book, Ricklefs presents the historical story of the division of Mataram caused by the rebellion of Prince Mangkubumi and Samber Nyawa. This book does not specifically explain who Mangkubumi was, who later became the founder of the Yogyakarta Sultanate with the title Hamengkubuwana I, but rather highlights the division of Java as the backdrop and Mangkubumi as the figure alongside Samber Nyawa/Mangkunegara, Pakubuwana III-IV, and the VOC. It explains the policies, attitudes, and efforts towards the reunification of Java until the belief in permanent division. It also explains the concept of a single Javanese king, which could no longer be seen as a solution, coupled with Dutch intervention in Java and the weariness of a war that had already taken up a lot of time. Many things are discussed in this thick book, but readers can enjoy it as if reading a novel because of its easy-to-read narrative. The only shortcomings I found were technical, such as typos and writing errors from the publisher, Mata Bangsa.