(7) Behind and within all the separate national literatures lay the common Christian-Latin literature of the early Middle Ages, undoubtedly the cause of the rather startling perfection of form shown by much of the work of the period we are studying.[1] [1] See Ebert "Allgemeine Geschichte der Literatur des Mittelalters". Vol. I., p. 11. The result of all these unifying tendencies is to give a strong family likeness to the productions of the various European countries of the eleventh, twelfth, and thirteenth centuries. The subject matter often varies, but the motive and form of writing are much alike. This likeness can be seen by a short survey of the more important kinds of literature of the period. I. THE NATIONAL EPIC. In every country in which the national epic grew up it had the same origin and line of development. First there was the historical hero. His deeds were related by the traveling gleeman or minstrel--in brief chapters or ballads. Gradually mythical and supernatural elements came in; the number of achievements and the number of ballads grew very large; in this oral state they continued for many years, sometimes for centuries. Finally, they were collected, edited, and written down--generally by a single editor. In all cases the names of the poets of the ballads are lost; in most cases the names of their redactors are but conjectural. "The Song of Roland", and the "Poem of the Cid" are typical, simple, national epics. The "Niebelungen Lied" is complicated by the fact that the legends of many heroes are fused into one poem, by the fact that it had more than one editor, and by the survival of mythological elements which mingle confusedly with Christian features. The national epic is the expression of the active side of chivalry. Italy has no national epic, both because she was too learned to develop a folk-poetry, and because the ideas of chivalry were never very active in her history. II. ROMANCES. The numberless romances that sprang up in the literary period of the Middle Ages may be thrown into three groups: 1. Those belonging to the legend of Arthur and the Round Table. They had their starting point in the history of Geoffrey of Monmouth, which was partly invented, but had some basis in a tradition common to the Bretons and the Welsh. The romances based upon this legend sprang up apparently simultaneously in England and France. Through minstrel romances, founded upon the Breton popular tradition, the Arthur legend probably first found its way into European literature. With it was early fused the stories of the Holy Grail and of Parzival. In the twelfth century these stories were widely popular in literary form in France and Germany, and later they passed into Italy, Spain, and Scandinavia. Their influence upon the life and thought of Mediaeval Europe is very important. They did much to modify the entire institution of chivalry.[1] [1] Leon Gautier's "Chivalry", chap. IV., Section V.