The native religion of the ancient Scandinavians was in its main features only a special form of that common to all the Germanic peoples, and this again was only a particular development of primitive beliefs and practices characteristic of the whole Aryan race. It is impossible to say how far back in time the special Germanic and Scandinavian developments of this religion may go, and of their earlier stages we have absolutely no knowledge beyond what may be doubtfully reached by the methods of comparison and inference. Even of the later stages our information is much more scanty than might be expected. Among the Goths, the southern Germans, and the Anglo-Saxons in Britain, paganism gave way to Christianity at so early a period, that very few details relating to it have been recorded by the civil or religious historians of these peoples; they were indeed more inclined to suppress than perpetuate any lingering knowledge of this kind. The absence of such information is a great bar to the proper understanding of many points in Scandinavian religion, which, instead of being thus illuminated from without, has continually been forced to throw light on the heathen worship of the other Teutonic peoples. As to the Scandinavian peoples themselves, it is only from a comparatively late period in the history of Europe that we have any real knowledge of them. They first became notorious at the close of the eighth century, when their unexpected piratical descents on Britain and France alarmed Western Christendom. Early in the ninth century the Saxon monk Ansgar ventured upon missionary enterprises into Scandinavia, at that time entirely a heathen region, and on two occasions reached the court of the Swedish king. About the middle of the same century Christianity began to make way in Denmark, which in another fifty years or so had become in the main a Christian land. During the tenth century the new faith began to make itself felt in Norway, but did not finally overcome the old religion until the beginning of the eleventh: in Iceland, which had been colonised from Norway, the adoption of Christianity took place somewhat suddenly in the year 1000. Sweden for the most part still remained heathen, and did not fully accept the new religion until the twelfth century.