Final answer:
The Franks were the largest and strongest Germanic tribe during the Dark Ages, establishing a successful kingdom under Clovis I.
Step-by-step explanation:
The largest and strongest Germanic tribe in the Dark Ages (400-700) was the Franks. They established the most successful Germanic kingdom, founded by Clovis I of the Merovingian dynasty in the early sixth century. Clovis I was known for his ruthlessness in expanding the Frankish kingdom. The Franks were a powerful force throughout the period, especially as they converted to Roman Christianity and developed strong centralized kingdoms.
The Vandals, also a significant Germanic tribe, crossed the Rhine in 406 and established themselves in parts of the Roman Empire. The Germanic peoples generally had profound impacts on the political, social, and cultural landscapes of Europe during this time, conducting trade, engaging in warfare, and influencing the direction of future societies.
By the end of the Dark Ages and into the early Middle Ages, other Germanic groups such as the Norse or Vikings had significant influence, though they were not the strongest tribe during the specified period. The Vikings eventually built fleets for raiding but also engaged in trade and farming