The story of the Anglo-Saxons begins not in the rolling hills of England but across the North Sea, in the windswept marshlands and dense forests of what is now Denmark, northern Germany, and the Netherlands. During the tumultuous centuries following the collapse of Roman authority in Britain around 410 CE, waves of Germanic peoples embarked on one of history's most significant migrations, forever transforming the cultural, linguistic, and political landscape of the British Isles.
The term "Anglo-Saxon" itself reflects the composite nature of this migration, combining the Angles from the Danish peninsula of Jutland and Schleswig, the Saxons from the coastal regions of northwestern Germany, and the Jutes from the Danish peninsula that still bears their name. These peoples shared similar languages, customs, and social structures, but they were not a unified nation or single ethnic group. Rather, they represented numerous tribes and clans, each with their own leaders, territories, and aspirations, united primarily by their Germanic heritage and their shared decision to seek new lands across the treacherous waters of the North Sea.
The reasons for this massive population movement were complex and varied, reflecting both the push factors that made life increasingly difficult in their continental homelands and the pull factors that made Britain an attractive destination. The end of Roman rule had created a power vacuum that invited invasion and settlement, while the withdrawal of Roman legions left the Romanized British population vulnerable and in need of military assistance. Archaeological evidence and written sources suggest that rising sea levels, increasing population pressure, political instability, and the aggressive expansion of Frankish power all contributed to the Germanic peoples' decision to seek new territories.