Charlemagne's practice of Empire / Jennifer R. Davis. Davis, Jennifer R. Charlemagne, Emperor, 742-814. Political leadership History To 1500. Imperialism History To 1500. 23 944.0142 DAC Bibliography: p. 437-521. Includes bibliographical references and index Cambridge : Cambridge University Press, 2015. 2015. 2015 Text xix, 531 p. : eng