Examines the development of feudalism in Western Europe during the Middle Ages, describes the characteristics of a feudal government, looks at the relationship of knights to feudalism, and discusses the decline of the system and the rise of kings.
Contains basic information on rivers, in simple text and illustrations, including how rivers are made, how rivers change, and what their habitats and ecosystems are like. Includes a list of related reading sites, a glossary, and an index.