"Danish History, Books I-IX" is an epic work of the ancient Danish historian Saxo Grammatik. In his book, the author describes the history of Denmark in detail, talking about legendary leaders, battles, political relations and cultural features of the Danish people. Saxo Grammar tells about the origin of the Danish people, their mythology, religion and customs. It also covers various periods of Danish history in detail, from Norse mythology to the Christian era. The book reflects the richness and diversity of ancient Danish culture, showing its influence on the development of the European Middle Ages. "Danish history, books I-IX" is not only a historical document, but also an important heritage of the Danish people, which helps to understand its past and essence.