as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
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research and provide 2 facts about the great wall of china.
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two facts about the great wall of china are that it is the longest man-made structure in the world, stretching for about 8,850 kilometers, and that it took over 2,000 years to build. it was built by different dynasties as a defense system to protect the country from invaders.
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