Answer:
The decline and end of the Western Roman Empire is a process that went on and was completed in the fifth century common era. It is best symbolized by the fall of the city of Rome in 476. The reason most quoted by historians is the invasions of hordes of barbarians. Internal decay - moral and political - and the rise of Christianity and its efffects on the Roman psyche are also quoted.
Many historians tend to emphasize the succesive invasions by barbarian peoples such as the Goths, the Franks, Celts and Burdundians. They occupied Roman territories and sacked cities. One Gothic commander, Alaric, commanded a force that laid siege to Rome. The city fell in 410 AD and was sacked by three days by his army.
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