Final answer:
Napoleon III improved Paris by implementing an urban renewal project led by Baron Haussmann. He also focused on economic development by establishing the Bank of France and implementing tax reforms.
Step-by-step explanation:
In the mid-19th century, Napoleon III aimed to improve Paris by implementing various reforms. One of the most significant initiatives was the urban renewal project led by Baron Haussmann, which transformed the city's infrastructure. This project involved clearing the center of Paris, constructing wide boulevards, modernizing street lighting, and upgrading sewage systems. Additionally, Napoleon III focused on economic development by establishing the Bank of France, implementing tax reforms, and improving trade and business.