Answer: The year 476
The Roman Empire fell to Germanic peoples that had infiltrated the empire. There had been ongoing migration of Germanic tribes into Roman empire territory, that had a gradual weakening effect on the empire. The western tribes consisted of groups such as the Alamanni, Franks, Angles, and Saxons. There was also a large group of Germanic tribes known as the Goths. We speak of the Visigoths and Ostrogoths do distinguish between the western and eastern Goths. The Visigoths (western Goths) invaded the Roman Empire, and defeated Roman armies at the Battle of Adrianople in 378. Later, the Visigoths even invaded Italy and sacked the city of Rome in 410. Then another Germanic leader, Odoacer, defeated the Romans in 476 and deposed the Roman emperor, Romulus Augustulus. Eventually, Odoacer was overcome by an Ostrogoth leader, Theodoric, in 493, and Theodoric took over control of Italy.