Final answer:
The establishment of the Byzantine Empire contributed to the strength and continued Roman identity in the eastern empire.
Step-by-step explanation:
One of the main factors that contributed to the strength and continued Roman identity in the eastern empire was the establishment of the Byzantine Empire. After the fall of the Western Roman Empire, the eastern part of the empire continued to thrive and preserve Roman traditions, culture, and administration under the leadership of Byzantine emperors such as Justinian I. The Byzantine Empire encompassed territories in the eastern Mediterranean and maintained a strong military, efficient bureaucracy, and a centralized government.
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