Capital Cities

What Turkish city has been the capital of three major empires: Roman, Byzantine and Ottoman?

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What state would you find the capital city of Saint Paul?
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What is the state capital of Hawaii?
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Which of these is located in the capital city of London?
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What is India's capital, also known as the National Capital Territory of India?
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Plymouth is the capital of which country?
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What is the capital of Luxembourg?
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Nassau is the capital city of which country?
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What was the capital of the Brazilian Empire when Emperor Dom Pedro I fled Napoleon from Portugal to Brazil?
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