There were many factors that allowed the Byzantine Empire to last a 1000 years after the end of the Roman Empire which include the fact that Constantinople, the capital of the Byzantine Empire, was protected with walls that lasted almost the entire 1000 years, making Constantinople, and the center of the empire's economy/culture impervious to invaders.
The power of the medieval church. Couldn't answer sooner forgive me.
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The answer is Romanticism and against the scientific rationalization of nature (an answer close to this 2nd one)
Explanation:
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The church organized politically,socially,and economically