How long did the Eastern Roman Empire continue after the fall of the West?

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The Eastern Roman Empire, which became known as the Byzantine Empire, continued for nearly 1,000 years after the fall of the Western Roman Empire in 476 CE.123

While the Western Roman Empire collapsed in the 5th century due to factors such as barbarian invasions and internal political instability, the East remained a richer and stronger entity. It persisted through the European Middle Ages as a center of administrative and intellectual life, with its capital at Constantinople. The empire finally fell in 1453 CE, when the city was taken by the Ottoman Empire under Mehmed II.1342