"American languages and why we should study them" is a research book by the famous American linguist Daniel J. Brinton, dedicated to the study of American Indian languages. The author deeply explores the linguistic and cultural aspects of the Indian peoples, reveals the unique features of their languages, and also points out the importance of preserving and studying these languages for modern society. The book "American Languages and Why We Should Study Them" is a valuable source of information not only for linguists, but also for anyone interested in the culture and languages of the Native American peoples of North America.