Answer: My best guess would either be: The fall of the western roman empire.
Step-by-step explanation:
It came just before the middle ages started, and I think that would be a big enough event to be your answer.
Answer:
It began with the fall of the Western Roman Empire and transitioned into the Renaissance and the Age of Discovery. The Middle Ages is the middle period of the three traditional divisions of Western history: classical antiquity, the medieval period, and the modern period.
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