The book "The estate type of territorial-administrative composition of the Lithuanian state and its causes" by F. and . Leontovicha is a deep and fascinating study that immerses the reader in the complex world of Lithuanian history and its administrative structure. This work will be a real find for all those who are interested in the history of Eastern Europe, sociology, political science and cultural aspects of the formation of statehood. Leontovich, known for his deep analytical work in the field of history and sociology, offers readers a unique view of the class type of territorial and administrative composition of Lithuania, which was formed over the centuries. The book examines not only historical facts, but also the reasons that led to the creation of such a structure, as well as its impact on modern Lithuanian society. The author masterfully combines historical analysis with sociological observations, which allows the reader to see how historical processes affect modernity. The book will be of interest to both specialists in the field of history and a wide audience wishing to understand more deeply how class relations and administrative structures shaped society. Students, teachers, historians and just lovers of history will find in this work a lot of valuable ideas and facts that will help them to expand their knowledge about Lithuania and its cultural heritage. It can also attract the attention of those who are interested in issues of identity and national identity, because Leontovych raises important topics related to the formation of the Lithuanian state and its place in the context of European history. One of the key themes of the book is the influence of the class structure on the political and social life of Lithuania. Leontovich explores how estates interacted with each other, how they influenced decision-making, and how this interaction affected the lives of ordinary people. The reader will be able to see how historical events, such as wars, reforms and external threats, shaped administrative boundaries and class relations. This makes the book not only a historical study, but also an important contribution to the understanding of socio-cultural processes. The author's style is distinguished by clarity and accessibility, which makes complex historical concepts understandable to a wide audience. Leontovich uses many examples and illustrations, which helps the reader to better assimilate the material. His deep knowledge of the subject and passion for history make reading fascinating and informative. If you are looking for books similar in subject, you should pay attention to the works of authors such as Igor Dodonov or Vyacheslav Mikhailov, who also explore the historical aspects of Eastern Europe. Leontovich’s book will be an excellent addition to the library for anyone interested in the history, culture and politics of the region. In conclusion, “The estate type of the territorial-administrative composition of the Lithuanian state and its causes” is not just a book, but a whole world that opens up to the reader. It offers a unique opportunity to look into Lithuania's past and understand how its heritage affects modernity. Don’t miss the chance to learn more about Lithuania’s fascinating history and its class structure by immersing yourself in this fascinating reading.