The book "The Viking Age. Volume 1 (of 2). Ancient History, Customs and Habits of the Ancestors of the English-Speaking Nations" is written by Paul B. Du Chayu. In this work, the author explores the Viking Age, revealing their early history, culture, religion, and customs. The book reveals the influence of the Vikings on the formation and development of English-speaking nations, including the British, Irish and Americans. The wars, trade, religious beliefs and everyday life of the Vikings are explored in detail, helping to better understand this interesting and important part of European history. This book will be a useful source of information for anyone interested in the history of the Vikings and the formation of English-speaking countries.