"The War in Paraguay" is a book by the French geographer and sociologist Elyse Reclus, in which he examines the conflict that took place in South America in the 19th century. The author studies in detail the causes and consequences of the war in Paraguay, analyzes the political and socioeconomic aspects of the conflict. Reclus reveals the historical events and the fate of the Paraguayan people through the lens of his deep knowledge of geography and sociology. This book is not only a historical essay, but also an important work that helps to better understand the complex processes that took place in South America in the middle of centuries ago.