Final Answer:
The people who migrated to Britain at the time of the fall of the Roman Empire were primarily composed of Germanic tribes and Celtic groups. Two defining characteristics of these migrants were their tribal affiliations and their agricultural practices.
Step-by-step explanation:
As the Roman Empire declined, various Germanic tribes and Celtic groups, seeking new opportunities and escaping the turmoil on the continent, migrated to Britain. The influx of Germanic tribes like the Angles, Saxons, and Jutes, along with existing Celtic populations, shaped the demographic landscape of Britain during this period. These tribes brought with them distinct tribal identities, often organized along familial or clan lines, influencing the social structure of the migrating communities.
A key defining characteristic of the migrating populations was their reliance on agriculture. The majority of these groups engaged in farming practices, cultivating the land for sustenance. Agriculture played a crucial role in their economic activities, contributing to the development of local economies and settlements. The shift from a predominantly Romanized urban lifestyle to a more agrarian way of life marked a significant transformation in the socio-economic fabric of Britain during this era.
The migration also led to cultural amalgamation, as Germanic and Celtic traditions intermingled. The newcomers contributed to the linguistic and cultural evolution of Britain, laying the foundations for the Anglo-Saxon period. The amalgamation of these diverse groups laid the groundwork for the medieval history of Britain, shaping its culture, language, and social structures in the centuries to come.