What were the groups that invaded Europe?

Several groups invaded Europe throughout history, particularly during the early medieval period. Notable among these were the Vikings from Scandinavia, who raided and settled in various regions; the Magyars from the east, who invaded parts of central Europe; and the Saracens, who conducted raids in southern Europe, especially in the Mediterranean. Additionally, the Huns, led by Attila, threatened the Roman Empire and contributed to its decline. These invasions significantly influenced the political and cultural landscape of Europe.