"The History of the Decline and Ruins of the Roman Empire, Volume 4" is a famous historical work by the English historian Edward Gibbon. In this book, the author examines the far-reaching consequences of the fall of the Roman Empire, examining the period from the conquest of Constantinople to the emergence of Muslim states in the East. Gibbon examines in detail the reasons for the decline of the empire, paying attention to internal divisions, wars within the empire and the collapse of external wars that led to the destruction of the power of the Roman state. The author carefully analyzes the political, social and cultural aspects of this period, drawing conclusions based on extensive research of sources and archaeological discoveries. "History of the Decline and Ruins of the Roman Empire, Volume 4" is not only a historical work, but also a powerful document that helps to better understand the complexity and importance of the history of the Roman Empire for the development of European civilization."