The "Treaty of Peace, Friendship, Commerce and Navigation between the Argentine Confederation and the Republic of Paraguay" is a historical document that records the arrangements between Argentina and Paraguay. The agreement was concluded to consolidate peace and cooperation between the two countries, establish trade relations and regulate issues related to shipping. The treaty was an important step in the establishment of friendly relations between the states, exchange of experience and development of the region's economy. This book is important for understanding the historical context and relationship between Argentina and Paraguay during a certain period of time.