The Ango-Saxons and the Scandinavians were both branches of the Germanic peoples,one of the major groupings of related tribes in Europe during the Dark Ages.Centuries later,learned,sympathetic historians from medieval Iceland and Denmark recorded their own history.The term "Germanic" was a collective name used by Julius Caesar, Tacitus,and other romans to identify those of the barbarian tribes of central Europe who were not "Celts". Since both tribes frequently moved from one territory to another in a complicated series of wars and migrations over several centuries,the distinction was not purely geographic.Although Caesar wrote of the Celts living west of the Rhine and the Germans east of it,this was at best a snapshot of the political situation in its time,and was probably inaccurate. Each tribe, naturally, had its own name for itself, its own king and its own history; even after migrating to a new territory it often kept its original name. The tribes`movements were spread over many generations,but two aspects of their dispersal are fairly well documented. The first (c.200BC-AD200) was the conflict between certain tribes and the Roman armies. The second,known as the Migration Age (AD400-800),was a large-scale movement of peoples that shaped the political map of post-Imperial Europe. One example among many indicates the scale of these migrations: the Goths moved from Sweden to north Germany in the first century BC, and divided into two groups,the Ostrogoths and Visigoths;by the fourth century AD the former dominated an area north of the Black Sea,while the latter were in Romania. Both were then dislodged by Huns, after which the Ostrogoths settled in Italy and the Visigoths in Spain. The distinguishing features of these tribes was their language. Germanic peoples were those who spoke the Germanic tongue,rather than idioms that were Celtic-,Slav- or Latin-based. By about the eighth century AD Germanic dialects had developed and divided into Dutch,Flemish,English,Danish,Swedish,Norwegian and Icelandic. The last four form a "Northern Germanic" or Scandinavian sub-group, rather different from the main "West Germanic" stock because they split off early from it. Despite these divergences, however,the myths and legends remained much the same in both groups.