Answer:
the north achieved victory in the civil war through attrition and massive advances in several fronts . The reason was that the army had several more soldiers in the northern front as compared to the southern front which worked to their benefit .
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The extent of the Byzantine territory was the highest during Justinian I rule. He almost reclaimed all territories that once belonged to the Roman Empire.
Answer:
It was simply because of there corrupt pursuit over their political obsession for power and authority
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