Final answer:
The Ostrogoths took over Italy in 476, marking the fall of the Western Roman Empire and the onset of a new historical era.
Step-by-step explanation:
The group that took over Italy in 476 was the Ostrogoths. During this period, various Germanic tribes such as the Visigoths, Franks, and Vandals, were establishing kingdoms in territories that had been part of the Roman Empire. While the Visigoths settled in Gaul and then moved into Spain, and the Franks expanded into northern Gaul under Clovis, it was the Ostrogoths who ultimately deposed the last Roman emperor and took control over Italy. This marked the fall of the Western Roman Empire and the beginning of a new era in European history.