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Period: 180 to 476
The decline of the Roman military army and society.
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285
Emperor Diocletian divided the Empire into two halves—the Western Empire and the Eastern Empire.
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300
Diocletian and Constantine, little to no loyalty to the empire.
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313
The Edict of Milan legalized Christianity.
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395
The rise of the Eastern Empire/The western political structure disintegrate in the fifth century.
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Period: 400 to 500
Rome was attack from outside forces while experiencing severe financial crisis.
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450
Economic troubles and overreliance on slave labor.
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476
Odoacer staged a revolt, deposing of Emperor Romulus Augustulus
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1169
Overexpansion and military overspending/Extraordinary funds were required for the upkeep of the empire..
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1453
Constantinople was left vulnerable.