Answer:
The Roman Civilization ended in 476 CE when the Germanic chieftain Odoacer deposed the last Roman emperor of the West, Romulus Augustulus. The fall of the Western Roman Empire was the result of a long process of the Empire failing to enforce its rule, and its vast territory being divided into several successor polities. Factors that contributed to the collapse included the effectiveness and numbers of the army, the health and numbers of the Roman population, the strength of the economy, the competence of the emperors, the internal struggles for power, the religious changes of the period, and the efficiency of the civil administration. Increasing pressure from invading barbarians outside Roman culture also contributed greatly to the collapse.
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